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Sattari F, Mirershadi S. Enhancement of absorption in a CH 3NH 3PbI 3-based photonic crystal in the presence of the monolayer MoS 2. Sci Rep 2023; 13:5970. [PMID: 37045905 PMCID: PMC10097723 DOI: 10.1038/s41598-023-33261-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 04/11/2023] [Indexed: 04/14/2023] Open
Abstract
Using the transfer matrix approach, we investigate theoretically the absorbance, transmittance, and reflectance through one-dimensional CH3NH3PbI3 perovskite-based photonic crystal at room temperature. In our proposed structure, a monolayer MoS2 film is embedded between two CH3NH3PbI3 layers. We found that, the presence of monolayer MoS2 film increases the absorbance in longer wavelengths [Formula: see text] With increasing the number of periods, absorbance increases in most wavelengths of the incident light. It was shown that, by controlling the number of periods, the absorbance coefficient can be tuned according to the wavelength and angle of incident light. Furthermore, for incident light with longer wavelength, the absorbance, transmittance as well as reflectance versus thickness of the perovskite layer have an oscillatory behavior, and with increasing the number of periods this oscillatory behavior becomes more obvious and prominent. For the incident light in the infrared region, by increasing the number of periods the absorbance as opposed to the transmittance increases for different incidence angles. While, the reflectance coefficient first shows oscillatory behavior by increasing the number of periods, then with a further increase in the number of periods it reaches a constant value. The proposed structure can be useful for optoelectronic and optical devices. Such as improving the efficiency of solar cells based on the hybrid inorganic-organic perovskites and infrared sensor system.
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Affiliation(s)
- Farhad Sattari
- Department of Physics, Faculty of Sciences, University of Mohaghegh Ardabili, Ardabil, P.O. Box 179, Iran.
- Nanoscience and Nanotechnology Research Group, University of Mohaghegh Ardabili, Ardabil, Iran.
| | - Soghra Mirershadi
- Department of Engineering Sciences, Faculty of Advanced Technologies, University of Mohaghegh Ardabili, Namin, Iran
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2
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Sarkar S, Padhy A, Nayak C. Transfer matrix optimization of a one-dimensional photonic crystal cavity for enhanced absorption of monolayer graphene. APPLIED OPTICS 2022; 61:8613-8623. [PMID: 36255993 DOI: 10.1364/ao.472854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Accepted: 09/07/2022] [Indexed: 06/16/2023]
Abstract
The optical absorption enhancement of graphene is of significant interest due to its remarkable applications in optical devices. One of the most useful methods is placing graphene in an asymmetric Fabry-Perot cavity made of one-dimensional dielectric multilayers forming two mirrors. In that regard, using the transfer matrix method, we have explicitly calculated the required periodicity of the front photonic multilayer mirror to maximize the absorption in the graphene for any given combination of material types and number of layers. Then we studied the equivalence between these structural configurations and those with arbitrary periodicity but with defects, where the equivalence holds when ω=ξω0,ξ∈Z≥0. These defects are introduced via layer position alterations, based on which we propose an optimization algorithm to maximize absorption in structures having a cavity with an arbitrary periodicity. Numerical calculations are given for dielectric material combinations of TiO2/SiO2 and Ta2O5/SiO2, and to understand the behavior of these optimized structures for any general combination of material types, the mapping of their calculated front mirror periodicity for a range of refractive indices of the two material types has been studied.
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3
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Li J, Zhang K, Pang C, Zhao Y, Zhou H, Chen H, Lu G, Liu F, Wu A, Du G, Akhmadaliev S, Zhou S, Chen F. Tunable structural colors in all-dielectric photonic crystals using energetic ion beams. OPTICS EXPRESS 2022; 30:23463-23474. [PMID: 36225025 DOI: 10.1364/oe.456129] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 05/30/2022] [Indexed: 06/16/2023]
Abstract
The modulation of structural color through various methods has attracted considerable attention. Herein, a new modulation method for the structural colors in all-dielectric photonic crystals (PCs) using energetic ion beams is proposed. One type of periodic PC and two different defective PCs were experimentally investigated. Under carbon-ion irradiation, the color variation primarily originated from the blue shift of the optical spectra. The varying degrees of both the reflection and transmission structural colors mainly depended on the carbon-ion fluences. Such nanostructures are promising for tunable color filters and double-sided chromatic displays based on PCs.
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4
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Magno G, Grande M, D'Orazio A. Multifunctional and reconfigurable graphene/liquid crystal-assisted asymmetrical Fabry-Pérot cavity for reflected light control. OPTICS EXPRESS 2021; 29:27816-27829. [PMID: 34615190 DOI: 10.1364/oe.432166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 07/04/2021] [Indexed: 06/13/2023]
Abstract
Multifunctional and reconfigurable devices are crucial for compact and smart optoelectronic devices. In this paper, we propose a multifunctional and spectrally reconfigurable asymmetric 1D PhC Fabry-Pérot cavity filled with nematic liquid crystal and bounded by two graphene monolayers. Due to the large number of available degrees of freedom, such a structure can behave as either a notch filter, an absorber, an amplitude modulator, or a phase shifter for the reflected electromagnetic waves. The chemical potential of one or both graphene monolayers can be exploited to modulate the amplitude and phase-shift angle of the reflected electromagnetic waves. Furthermore, all functions are narrowband (1 nm linewidth) and are spectrally tunable over a range of about 200 nm around the working wavelength of 1550 nm by controlling the orientation of the elongated molecules of the liquid crystal. This structure may be advantageously exploited for the realization of optical modulators and beamsteering systems.
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Gao X, Zhu Z, Yuan J, Jiang L. Tunable and multifunctional terahertz devices based on one-dimensional anisotropic photonic crystals containing graphene and phase-change material. OPTICS EXPRESS 2021; 29:13314-13330. [PMID: 33985068 DOI: 10.1364/oe.421413] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2021] [Accepted: 04/08/2021] [Indexed: 06/12/2023]
Abstract
In the past few years, designing tunable and multifunctional terahertz devices has become a hot research area in terahertz science and technology. In this work, we report a study on one-dimensional anisotropic photonic crystals (1D APCs) containing graphene and phase-change material VO2. We numerically demonstrate the band-pass filtering, perfect absorption, comb-shaped extraordinary optical transmission and Fano-like resonance phenomenon in pure 1D APCs and 1D APCs with a VO2 defect layer under different conditions of a tangential wave vector. The performance of these phenomena in the terahertz region can be modulated by changing the chemical potential of graphene. The band-pass filter and perfect absorber functions of 1D APCs with a VO2 defect layer can be freely switched by changing the phase of VO2. We employ the equivalent-permittivity model and dispersion-relation equation to give reasonable explanations on these behaviors.
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6
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Chen X, Wang F, Gu Q, Yang J, Yu M, Kwong DL, Wong CW, Yang H, Zhou H, Zhou S. Multifunctional optoelectronic device based on graphene-coupled silicon photonic crystal cavities. OPTICS EXPRESS 2021; 29:11094-11105. [PMID: 33820228 DOI: 10.1364/oe.421596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 03/12/2021] [Indexed: 06/12/2023]
Abstract
We present a hybrid device based on graphene-coupled silicon (Si) photonic crystal (PhC) cavities, featuring triple light detection, modulation, and switching. Through depositing single-layer graphene onto the PhC cavity, the light-graphene interaction can be enhanced greatly, which enables significant detection and modulation of the resonant wavelength. The device is designed to generate a photocurrent directly by the photovoltaic effect and has an external responsivity of ∼14 mA/W at 1530.8 nm (on resonance), which is about 10 times higher than that off-resonance. Based on the thermo-optical effect of silicon and graphene, the device is also demonstrated in electro-optical and all-optical modulation. Also, due to the high-quality (Q) factor of the resonate cavity, the device can implement low threshold optical bistable switching, and it promises a fast response speed, with a rise (fall) time of ∼0.4 μs (∼0.5 μs) in the all-optical switch and a rise (fall) time of ∼0.5 μs (∼0.5 μs) in the electro-optical hybrid switch. The multifunctional photodetector, modulator, and optical bistable switch are achieved in a single device, which greatly reduces the photonic overhead and provides potential applications for future integrated optoelectronics.
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7
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Zhang J, Hong Q, Zou J, Meng Q, Qin S, Zhu Z. Ultra-narrowband visible light absorption in a monolayer MoS 2 based resonant nanostructure. OPTICS EXPRESS 2020; 28:27608-27614. [PMID: 32988051 DOI: 10.1364/oe.405050] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2020] [Accepted: 08/27/2020] [Indexed: 06/11/2023]
Abstract
Enhance light absorption in two-dimensional (2D) materials are of great importance for the development of many optoelectronic devices such as photodetectors, modulators and thermal emitters. In this paper, a resonant nanostructure based on subwavelength gratings of monolayer molybdenum disulphide (MoS2) is proposed. It is shown numerically that the excitation of guided modes in the proposed structure leads to perfect absorption in the visible range. The linewidth of the absorption spectrum can be narrow down to 0.1 nm. The resonance wavelength exhibits an almost linear dependence on the incidence angle. The proposed structure provides a method to design ultra-narrowband absorbers and similar designs can be applied to other 2D materials. It may find applications for optical filters, directional thermal emitters, 2D materials based lasers and others.
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Liu B, Yu W, Yan Z, Tang C, Chen J, Gu P, Liu Z, Huang Z. Ultra-narrowband light absorption enhancement of monolayer graphene from waveguide mode. OPTICS EXPRESS 2020; 28:24908-24917. [PMID: 32907021 DOI: 10.1364/oe.401329] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 07/30/2020] [Indexed: 06/11/2023]
Abstract
Greatly improving the light absorption efficiency of graphene and simultaneously manipulating the corresponding absorption bandwidth (broadband or narrowband) is practically important to design graphene-based optoelectronic devices. In this work, we will theoretically show how to largely enhance the absorption in graphene and efficiently control the absorption bandwidth in the visible region, by the excitation of the waveguide mode for the graphene monolayer to be sandwiched between the gold sphere array and dielectric waveguide structure composed of indium tin oxide (ITO) film on a quartz substrate. It is found that the maximum absorption efficiency can reach as high as about 45% and the full-width at half-maximum (FWHM) of the absorption peak can be tuned from about 1 to 10 nanometers, when the array period of gold spheres or the thickness of ITO film is changed.
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Zhou S, Chen S, Wu Y, Liao S, Li H, Xie C, Chan M. Bistable active spectral tuning of one-dimensional nanophotonic crystal by phase change. OPTICS EXPRESS 2020; 28:8341-8349. [PMID: 32225461 DOI: 10.1364/oe.387814] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/10/2020] [Accepted: 02/24/2020] [Indexed: 06/10/2023]
Abstract
Active spectral tuning of nanophotonic devices offers many fascinating prospects for the realization of novel optical function. Here, switchable spectral response is enabled by the architecture of one-dimensional (1D) photonic crystal (PC) integrated with phase change material of the germanium antimony telluride (GST). Active and precise tuning of the bistable passband and central resonant frequency is demonstrated in the 1D PC composed of alternate SiN and GST nanofilms. An analytical model is derived to specify the tunable spectral features, including the band gap and resonant frequencies. Both the measured and calculated results show distinct red shifts of passband and the resonant minima (or maxima), well confirming theoretical predictions. This work demonstrates a route to construct active photonic devices with the electrically or thermally tunable spectra via 1D PC and potentially extends diverse applications based on the PC platform.
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10
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Zhao Z, Li G, Su T, Yu F, Zhang Y, Wang W, Men W, Wang Z, Xuan L, Chen X, Lu W. Selectively thermal radiation control in long-wavelength infrared with broadband all-dielectric absorber. OPTICS EXPRESS 2019; 27:35088-35095. [PMID: 31878684 DOI: 10.1364/oe.27.035088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Accepted: 11/04/2019] [Indexed: 06/10/2023]
Abstract
Artificial control of the thermal radiation is of growing importance to fundamental science and technological applications, ranging from waste heat recovery to thermophotovoltaics. Nanophotonics has been proven to be an efficient approach to manipulate the radiation. In comparison with structures utilizing planar subwavelength scale lithography, in this paper, we propose a cascaded all-dielectric multilayer structure to selectively manipulate the thermal radiation characteristics in long-wavelength infrared (LWIR). The broadband emissivity in non-atmospheric windows (6.3-7.5 µm) can reach 0.95 and the average absorption rate is below 3% in atmospheric windows (8-14 µm). The multilayer structure is insensitive to the polarization of the incident waves and maintains a good rectangular absorptivity curve even with large oblique incidence angle at 45 degrees. The outstanding properties of the nanostructures promise various applications in infrared sensing and thermal imaging.
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11
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Zhang S, Shen C, Kislyakov IM, Dong N, Ryzhov A, Zhang X, Belousova IM, Nunzi JM, Wang J. Photonic-crystal-based broadband graphene saturable absorber. OPTICS LETTERS 2019; 44:4785-4788. [PMID: 31568442 DOI: 10.1364/ol.44.004785] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 09/02/2019] [Indexed: 06/10/2023]
Abstract
The enhanced saturable absorption (SA) of a one-dimensional (1D) photonic crystal (PC) made from polymers and graphene composites by spin coating is observed. It shows obvious bandgaps at two wavelengths in transmittance. Femtosecond Z-scan measurement at 515 nm and 1030 nm reveals a distinct enhancement in the effective nonlinear absorption coefficient βeff for graphene nanoflakes embedded in the PC, when compared with the bulk graphene-polymer composite. The effect is studied in a wide range of laser intensities. Graphene inclusion into a 1D PC remarkably decreases the SA threshold and saturation intensity, providing a desired solution for an advanced all-optical laser mode-locking device.
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12
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Graphene perfect absorber of ultra-wide bandwidth based on wavelength-insensitive phase matching in prism coupling. Sci Rep 2019; 9:11967. [PMID: 31427657 PMCID: PMC6700108 DOI: 10.1038/s41598-019-48501-w] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 08/07/2019] [Indexed: 11/09/2022] Open
Abstract
We proposed perfect absorbers of ultra-wide bandwidths based on prism coupling with wavelength-insensitive phase matching, which consists of three dielectric layers (Prism-Cavity-Air) with monolayer graphene embedded in the cavity layer. Due to inherent material dispersion of the dielectric layers, with the proper choice of the incidence angle and the cavity thickness, the proposed perfect absorbers can satisfy the phase matching condition over a wide wavelength range, inducing enormous enhancement of the absorption bandwidth. The requirement on the material dispersions of the prism and the cavity layer for the wavelength-insensitive phase matching over a wavelength range of the interest has been derived, and it has been demonstrated that the various kinds of materials can meet the requirement. Our theoretical investigation with the transfer matrix method (TMM) has revealed that a 99% absorption bandwidth of ~300 nm with perfect absorption at λ = 1.51 μm can be achieved when BK7 and PDMS are used as the prism and the cavity layer, respectively, which is ~7 times wider than the conceptual design based on the non-dispersive materials. The full width at half maximum of our designed perfect absorber is larger than 1.5 μm.
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13
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Graphene-Based Cylindrical Pillar Gratings for Polarization-Insensitive Optical Absorbers. APPLIED SCIENCES-BASEL 2019. [DOI: 10.3390/app9122528] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
In this study, we present a two-dimensional dielectric grating which allows achieving high absorption in a monolayer graphene at visible and near-infrared frequencies. Dielectric gratings create guided-mode resonances that are exploited to effectively couple light with the graphene layer. The proposed structure was numerically analyzed through a rigorous coupled-wave analysis method. Effects of geometrical parameters and response to the oblique incidence of the plane wave were studied. Numerical results reveal that light absorption in the proposed structure is almost insensitive to the angle of the impinging source over a considerable wide angular range of 20°. This may lead to the development of easy to fabricate and experimentally viable graphene-based absorbers in the future.
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14
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High fabrication-tolerant narrowband perfect graphene absorber based on guided-mode resonance in distributed Bragg reflector. Sci Rep 2019; 9:4294. [PMID: 30862879 PMCID: PMC6414689 DOI: 10.1038/s41598-019-40945-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 02/26/2019] [Indexed: 11/13/2022] Open
Abstract
We propose the narrowband perfect absorbers with enormously high fabrication tolerance, which consists of a low-contrast grating and a finite distributed Bragg reflector (DBR) layer with an ultrathin absorbing medium (graphene). It is numerically shown that the proposed perfect absorber outperforms the previously proposed schemes in fabrication tolerance. According to the rigorous coupled wave analysis (RCWA) and coupled mode theory (CMT) fitting, over a considerably wide range of grating width and thickness, the proposed absorber provides a proper ratio of leakage rate to loss rate while preserving resonant condition, so that almost perfect absorption (>99.9%) can be obtained. This result is attributed to the strong electric field confinement in the DBR region rather than the grating layer owing to lower index of grating compared to DBR. In addition, without degrading the fabrication tolerance, the bandwidth of the proposed absorber can be controlled by the DBR thickness (the number of pairs) and a narrow absorbing bandwidth of sub-nanometer is achieved with 8.5 Si/SiO2 pair stacked DBR.
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15
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Lu G, Wu F, Zheng M, Chen C, Zhou X, Diao C, Liu F, Du G, Xue C, Jiang H, Chen H. Perfect optical absorbers in a wide range of incidence by photonic heterostructures containing layered hyperbolic metamaterials. OPTICS EXPRESS 2019; 27:5326-5336. [PMID: 30876132 DOI: 10.1364/oe.27.005326] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 01/29/2019] [Indexed: 06/09/2023]
Abstract
We theoretically and experimentally investigate the wide-angle perfect absorptance in a photonic heterostructure composed of a metal film and a truncated photonic crystal (PC) with layered hyperbolic metamaterials (HMMs) in the near ultraviolet and visible regions. The wide-angle perfect optical absorption depends on the dispersionless Tamm plasmon polarition (TPP) under TM polarization, which originates from reflection phase compensation condition between the metal and the truncated PC with HMMs. Our experimental results show nearly perfect absorptance over 0.91 in an angle range of 0-45 degree, which facilitates the design of perfect optical absorbers working in a wide angle range.
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16
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Guo C, Zhang J, Xu W, Liu K, Yuan X, Qin S, Zhu Z. Graphene-Based Perfect Absorption Structures in the Visible to Terahertz Band and Their Optoelectronics Applications. NANOMATERIALS 2018; 8:nano8121033. [PMID: 30545038 PMCID: PMC6316068 DOI: 10.3390/nano8121033] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 11/30/2018] [Accepted: 12/04/2018] [Indexed: 11/16/2022]
Abstract
Graphene has unique properties which make it an ideal material for photonic and optoelectronic devices. However, the low light absorption in monolayer graphene seriously limits its practical applications. In order to greatly enhance the light absorption of graphene, many graphene-based structures have been developed to achieve perfect absorption of incident waves. In this review, we discuss and analyze various types of graphene-based perfect absorption structures in the visible to terahertz band. In particular, we review recent advances and optoelectronic applications of such structures. Indeed, the graphene-based perfect absorption structures offer the promise of solving the key problem which limits the applications of graphene in practical optoelectronic devices.
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Affiliation(s)
- Chucai Guo
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China.
| | - Jianfa Zhang
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China.
| | - Wei Xu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China.
| | - Ken Liu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China.
| | - Xiaodong Yuan
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China.
| | - Shiqiao Qin
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China.
| | - Zhihong Zhu
- College of Advanced Interdisciplinary Studies, National University of Defense Technology, Changsha 410073, China.
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Sahrai M, Abbasabadi M. All-optical switch based on doped graphene quantum dots in a defect layer of a one-dimensional photonic crystal. APPLIED OPTICS 2018; 57:521-526. [PMID: 29400802 DOI: 10.1364/ao.57.000521] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2017] [Accepted: 12/21/2017] [Indexed: 06/07/2023]
Abstract
We discuss the light pulse propagation in a one-dimensional photonic crystal doped by graphene quantum dots in a defect layer. The graphene quantum dots behave as a three-level quantum system and are driven by three coherent laser fields. It is shown that the group velocity of the transmitted and reflected pulses can be switched from subluminal to superluminal light propagation by adjusting the relative phase of the applied fields. Furthermore, it is found that by proper choice of the phase difference between applied fields, the weak probe field amplification is achieved through a one-dimensional photonic crystal. In this way, the result is simultaneous subluminal transmission and reflection.
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18
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Liu JT, Tong H, Wu ZH, Huang JB, Zhou YS. Greatly enhanced light emission of MoS 2 using photonic crystal heterojunction. Sci Rep 2017; 7:16391. [PMID: 29180676 PMCID: PMC5703902 DOI: 10.1038/s41598-017-16502-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2017] [Accepted: 11/14/2017] [Indexed: 11/20/2022] Open
Abstract
We present theoretical study on developing a one-dimensional (1D) photonic crystal heterojunction (h-PhC) that consists of a monolayer molybdenum disulfide (MoS2) structure. By employing the transfer matrix method, we obtained the analytical solution of the light absorption and emission of two-dimensional materials in 1D h-PhC. Simultaneously enhancing the light absorption and emission of the medium in multiple frequency ranges is easy as h-PhC has more modes of photon localization than the common photonic crystal. Our numerical results demonstrate that the proposed 1D h-PhC can simultaneously enhance the light absorption and emission of MoS2 and enhance the photoluminescence spectrum of MoS2 by 2-3 orders of magnitude.
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Affiliation(s)
- Jiang-Tao Liu
- College of Mechanical and electrical engineering, Guizhou Minzu University, Guiyang, 550025, China.
- Department of Physics, Nanchang University, Nanchang, 330031, China.
- Institute for Advancfed Study, Nanchang University, Nanchang, 330031, China.
| | - Hong Tong
- College of Mechanical and electrical engineering, Guizhou Minzu University, Guiyang, 550025, China
| | - Zhen-Hua Wu
- Key Laboratory of Microelectronic Devices and Integrated Technology, Institute of Microelec-tronics, Chinese Academy of Sciences, Beijing, 100029, China
| | - Jin-Bao Huang
- College of Mechanical and electrical engineering, Guizhou Minzu University, Guiyang, 550025, China
| | - Yun-Song Zhou
- Department of Physics, Capital Normal University, Beijing, 100037, China.
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19
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Vijisha MV, Sini VV, Siji Narendran NK, Chandrasekharan K. Enhanced nonlinear optical response from dihydroxy(5,10,15,20-tetraphenyl porphyrinato)tin(iv) or SnTPP in a fully plastic photonic crystal microcavity. Phys Chem Chem Phys 2017; 19:29641-29646. [PMID: 29083425 DOI: 10.1039/c7cp06455a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An all-plastic one dimensional photonic crystal microcavity incorporating a porphyrin based defect, with enhanced nonlinear optical properties is demonstrated. The results suggest that our system can be a potential candidate towards the realization of flexible and thus reconfigurable low power photonic devices suitable for low cost-scale integrated photonics technology.
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Affiliation(s)
- M V Vijisha
- Laser and Nonlinear Optics Laboratory, Department of Physics, National Institute of Technology Calicut, Kozhikkode-673601, Kerala, India.
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20
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Ooi KJA, Tan DTH. Nonlinear graphene plasmonics. Proc Math Phys Eng Sci 2017; 473:20170433. [PMID: 29118665 PMCID: PMC5666235 DOI: 10.1098/rspa.2017.0433] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Accepted: 09/20/2017] [Indexed: 11/12/2022] Open
Abstract
The rapid development of graphene has opened up exciting new fields in graphene plasmonics and nonlinear optics. Graphene's unique two-dimensional band structure provides extraordinary linear and nonlinear optical properties, which have led to extreme optical confinement in graphene plasmonics and ultrahigh nonlinear optical coefficients, respectively. The synergy between graphene's linear and nonlinear optical properties gave rise to nonlinear graphene plasmonics, which greatly augments graphene-based nonlinear device performance beyond a billion-fold. This nascent field of research will eventually find far-reaching revolutionary technological applications that require device miniaturization, low power consumption and a broad range of operating wavelengths approaching the far-infrared, such as optical computing, medical instrumentation and security applications.
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Affiliation(s)
| | - Dawn T. H. Tan
- Photonics Devices and Systems Group, SUTD-MIT International Design Center, Singapore University of Technology and Design, 8 Somapah Road, 487372Singapore
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21
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Rashidi A, Namdar A, Abdi-Ghaleh R. Magnetically tunable enhanced absorption of circularly polarized light in graphene-based 1D photonic crystals. APPLIED OPTICS 2017; 56:5914-5919. [PMID: 29047911 DOI: 10.1364/ao.56.005914] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Accepted: 06/20/2017] [Indexed: 06/07/2023]
Abstract
We theoretically investigate the magnetic-field-induced terahertz absorption enhancement of a graphene-based one-dimensional photonic crystal using the 4×4 transfer matrix method for the circular polarization of light. The results show that the magnetically tunable absorption of the structure depends on the circular polarization state, magnetic circular dichroism, and, interestingly, absorption behaviors of right-handed and left-handed circularly polarized light interchange by changing the direction of the magnetic field. These properties can be used to design the circular-polarization-based sensors.
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22
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Savostianova NA, Mikhailov SA. Third harmonic generation from graphene lying on different substrates: optical-phonon resonances and interference effects. OPTICS EXPRESS 2017; 25:3268-3285. [PMID: 28241543 DOI: 10.1364/oe.25.003268] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Graphene is a nonlinear material which can be used as a saturable absorber, frequency mixer and frequency multiplier. We theoretically study the third harmonic generation from graphene lying on different dielectric (dispersionless or polar) substrates, metalized or non-metalized on the back side. We show that the third harmonic intensity emitted from graphene lying on a substrate, can be increased by orders of magnitude as compared to the isolated graphene, due the LO-phonon resonances in a polar dielectric or due to the interference effects in the substrates metalized on the back side. In some frequency intervals, the presence of the polar dielectric substrate compensates the strongly decreasing with ω frequency dependence of the third-order conductivity of graphene making the response almost frequency independent. Our results can be used for the development of graphene based frequency multipliers operating in microwave through infrared frequencies.
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Zheng G, Zhang H, Xu L, Liu Y. Enhanced absorption of graphene monolayer with a single-layer resonant grating at the Brewster angle in the visible range. OPTICS LETTERS 2016; 41:2274-7. [PMID: 27176981 DOI: 10.1364/ol.41.002274] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
One method for enhancement and manipulation of light absorption with monolayer graphene covered on a single-layer guided mode resonant Brewster filter surface is demonstrated. By means of the rigorous coupled-wave analysis method, the effect of geometrical parameters on the optical response of the structure is investigated. It is possible to achieve a maximum absorption of 60% at the Brewster angle; dual-band optical absorption can also be realized when the depth of the grating is increased. The situation of oblique incidence for TM polarization is studied as well; the absorption property can be controlled by adjusting the incident angle without changing the structural parameters. The proposed structure has the advantage of more free geometry parameters compared to the graphene disk and ribbon, so the absorption could be tuned more flexibly.
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Wu YB, Yang W, Wang TB, Deng XH, Liu JT. Broadband perfect light trapping in the thinnest monolayer graphene-MoS2 photovoltaic cell: the new application of spectrum-splitting structure. Sci Rep 2016; 6:20955. [PMID: 26864749 PMCID: PMC4750090 DOI: 10.1038/srep20955] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2015] [Accepted: 01/13/2016] [Indexed: 11/12/2022] Open
Abstract
The light absorption of a monolayer graphene-molybdenum disulfide photovoltaic (GM-PV) cell in a wedge-shaped microcavity with a spectrum-splitting structure is investigated theoretically. The GM-PV cell, which is three times thinner than the traditional photovoltaic cell, exhibits up to 98% light absorptance in a wide wavelength range. This rate exceeds the fundamental limit of nanophotonic light trapping in solar cells. The effects of defect layer thickness, GM-PV cell position in the microcavity, incident angle, and lens aberration on the light absorptance of the GM-PV cell are explored. Despite these effects, the GM-PV cell can still achieve at least 90% light absorptance with the current technology. Our proposal provides different methods to design light-trapping structures and apply spectrum-splitting systems.
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Affiliation(s)
- Yun-Ben Wu
- Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang 330031, China
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - Wen Yang
- Beijing Computational Science Research Center, Beijing 100094, China
| | - Tong-Biao Wang
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - Xin-Hua Deng
- Department of Physics, Nanchang University, Nanchang 330031, China
| | - Jiang-Tao Liu
- Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang 330031, China
- Department of Physics, Nanchang University, Nanchang 330031, China
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Grande M, Vincenti MA, Stomeo T, Bianco GV, de Ceglia D, Aközbek N, Petruzzelli V, Bruno G, De Vittorio M, Scalora M, D'Orazio A. Graphene-based perfect optical absorbers harnessing guided mode resonances. OPTICS EXPRESS 2015; 23:21032-42. [PMID: 26367955 DOI: 10.1364/oe.23.021032] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
We investigate graphene-based optical absorbers that exploit guided mode resonances (GMRs) attaining theoretically perfect absorption over a bandwidth of few nanometers (over the visible and near-infrared ranges) with a 40-fold increase of the monolayer graphene absorption. We analyze the influence of the geometrical parameters on the absorption rate and the angular response for oblique incidence. Finally, we experimentally verify the theoretical predictions in a one-dimensional, dielectric grating by placing it near either a metallic or a dielectric mirror, thus achieving very good agreement between numerical predictions and experimental results.
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Liu JT, Deng XH, Yang W, Li J. Perfect light trapping in nanoscale thickness semiconductor films with a resonant back reflector and spectrum-splitting structures. Phys Chem Chem Phys 2015; 17:3303-8. [PMID: 25523334 DOI: 10.1039/c4cp04717f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The optical absorption of nanoscale thickness semiconductor films on top of light-trapping structures based on optical interference effects combined with spectrum-splitting structures is theoretically investigated. Nearly perfect absorption over a broad spectrum range can be achieved in <100 nm thick films on top of a one-dimensional photonic crystal or metal films. This phenomenon can be attributed to interference induced photonic localization, which enhances the absorption and reduces the reflection of the films. Perfect solar absorption and low carrier thermalization loss can be achieved when the light-trapping structures with a wedge-shaped spacer layer or semiconductor films are combined with spectrum-splitting structures.
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Affiliation(s)
- Jiang-Tao Liu
- Nanoscale Science and Technology Laboratory, Institute for Advanced Study, Nanchang University, Nanchang 330031, China.
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Grande M, Vincenti MA, Stomeo T, Bianco GV, de Ceglia D, Aközbek N, Petruzzelli V, Bruno G, De Vittorio M, Scalora M, D'Orazio A. Graphene-based absorber exploiting guided mode resonances in one-dimensional gratings. OPTICS EXPRESS 2014; 22:31511-9. [PMID: 25607101 DOI: 10.1364/oe.22.031511] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
A one-dimensional dielectric grating, based on a simple geometry, is proposed and investigated to enhance light absorption in a monolayer graphene exploiting guided mode resonances. Numerical findings reveal that the optimized configuration is able to absorb up to 60% of the impinging light at normal incidence for both TE and TM polarizations resulting in a theoretical enhancement factor of about 26 with respect to the monolayer graphene absorption (≈2.3%). Experimental results confirm this behavior showing CVD graphene absorbance peaks up to about 40% over narrow bands of a few nanometers. The simple and flexible design points to a way to realize innovative, scalable and easy-to-fabricate graphene-based optical absorbers.
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Vasić B, Gajić R. Tunable Fabry-Perot resonators with embedded graphene from terahertz to near-infrared frequencies. OPTICS LETTERS 2014; 39:6253-6256. [PMID: 25361327 DOI: 10.1364/ol.39.006253] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Fabry-Perot resonators with inserted graphene are proposed for efficient reflectance modulation from terahertz to near-infrared frequencies. The resonators' structure is simple and consists of the Bragg top mirror, the cavity with the graphene, and the metallic bottom mirror. Reflectance from the cavities is electrically controlled by adjusting the Fermi level in the graphene. At near-infrared and terahertz frequencies, the amplitude modulation of the reflectance is dominant. On the other hand, tuning at mid-infrared frequencies is based on the spectral modulation of cavity resonances. By the impedance matching of resonators to a surrounding medium, the achieved insertion loss and modulation depth approach zero and 100%, respectively.
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