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Madiot G, Ng RC, Arregui G, Florez O, Albrechtsen M, Stobbe S, García PD, Sotomayor-Torres CM. Optomechanical Generation of Coherent GHz Vibrations in a Phononic Waveguide. PHYSICAL REVIEW LETTERS 2023; 130:106903. [PMID: 36962028 DOI: 10.1103/physrevlett.130.106903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 12/17/2022] [Accepted: 01/27/2023] [Indexed: 06/18/2023]
Abstract
Nanophononics has the potential for information transfer, in an analogous manner to its photonic and electronic counterparts. The adoption of phononic systems has been limited, due to difficulties associated with the generation, manipulation, and detection of phonons, especially at GHz frequencies. Existing techniques often require piezoelectric materials with an external radiofrequency excitation that are not readily integrated into existing CMOS infrastructures, while nonpiezoelectric demonstrations have been inefficient. In this Letter, we explore the optomechanical generation of coherent phonons in a suspended 2D silicon phononic crystal cavity with a guided mode around 6.8 GHz. By incorporating an air-slot into this cavity, we turn the phononic waveguide into an optomechanical platform that exploits localized photonic modes resulting from inherent fabrication imperfections for the transduction of mechanics. Such a platform exhibits very fine control of phonons using light, and is capable of coherent self-sustained phonon generation around 6.8 GHz, operating at room temperature. The ability to generate high frequency coherent mechanical vibrations within such a simple 2D CMOS-compatible system could be a first step towards the development of sources in phononic circuitry and the coherent manipulation of other solid-state properties.
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Affiliation(s)
- Guilhem Madiot
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Ryan C Ng
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Guillermo Arregui
- DTU Electro, Department of Electrical and Photonics Engineering, Technical University of Denmark, Ørsteds Plads 343, DK-2800 Kgs. Lyngby, Denmark
| | - Omar Florez
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), Campus UAB, Bellaterra, 08193 Barcelona, Spain
- Dept. de Física, Universitat Autonoma de Barcelona, 08193 Bellaterra, Spain
| | - Marcus Albrechtsen
- DTU Electro, Department of Electrical and Photonics Engineering, Technical University of Denmark, Ørsteds Plads 343, DK-2800 Kgs. Lyngby, Denmark
| | - Søren Stobbe
- DTU Electro, Department of Electrical and Photonics Engineering, Technical University of Denmark, Ørsteds Plads 343, DK-2800 Kgs. Lyngby, Denmark
- NanoPhoton-Center for Nanophotonics, Technical University of Denmark, Ørsteds Plads 345A, DK-2800 Kgs. Lyngby, Denmark
| | - Pedro D García
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - Clivia M Sotomayor-Torres
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), Campus UAB, Bellaterra, 08193 Barcelona, Spain
- ICREA-Institució Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain
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2
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Wu N, Cui K, Xu Q, Feng X, Liu F, Zhang W, Huang Y. On-chip mechanical exceptional points based on an optomechanical zipper cavity. SCIENCE ADVANCES 2023; 9:eabp8892. [PMID: 36652517 PMCID: PMC9848635 DOI: 10.1126/sciadv.abp8892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 12/19/2022] [Indexed: 06/17/2023]
Abstract
Exceptional points (EPs) represent a distinct type of spectral singularity in non-Hermitian systems, and intriguing physics concepts have been studied with optical EPs recently. As a system beyond photonics, the mechanical oscillators coupling with many physical systems are expected to be further exploited EPs for mechanical sensing, topology energy transfer, nonreciprocal dynamics, etc. In this study, we demonstrated on-chip mechanical EPs with a silicon optomechanical zipper cavity, wherein two near-degenerate mechanical breathing modes are coupled via a single colocalized optical mode. By tailoring the dissipative and coherent couplings between two mechanical oscillators, the spectral splitting with 1/2 order response, a distinctive feature of EP, was observed successfully. Our work provides an integrated platform for investigating the physics related to mechanical EPs on silicon chips and suggests their possible applications for ultrasensitive measurements.
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Affiliation(s)
- Ning Wu
- Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
- Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Kaiyu Cui
- Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
- Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Qiancheng Xu
- Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
- Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Xue Feng
- Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
- Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Fang Liu
- Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
- Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Wei Zhang
- Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
- Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
- Beijing Academy of Quantum Information Sciences, Beijing, China
| | - Yidong Huang
- Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
- Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
- Beijing Academy of Quantum Information Sciences, Beijing, China
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3
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Xiong J, Huang Z, Cui K, Feng X, Liu F, Zhang W, Huang Y. Phonon and Photon Lasing Dynamics in Optomechanical Cavities. FUNDAMENTAL RESEARCH 2022. [DOI: 10.1016/j.fmre.2022.10.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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4
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Ng RC, El Sachat A, Cespedes F, Poblet M, Madiot G, Jaramillo-Fernandez J, Florez O, Xiao P, Sledzinska M, Sotomayor-Torres CM, Chavez-Angel E. Excitation and detection of acoustic phonons in nanoscale systems. NANOSCALE 2022; 14:13428-13451. [PMID: 36082529 PMCID: PMC9520674 DOI: 10.1039/d2nr04100f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
Phonons play a key role in the physical properties of materials, and have long been a topic of study in physics. While the effects of phonons had historically been considered to be a hindrance, modern research has shown that phonons can be exploited due to their ability to couple to other excitations and consequently affect the thermal, dielectric, and electronic properties of solid state systems, greatly motivating the engineering of phononic structures. Advances in nanofabrication have allowed for structuring and phonon confinement even down to the nanoscale, drastically changing material properties. Despite developments in fabricating such nanoscale devices, the proper manipulation and characterization of phonons continues to be challenging. However, a fundamental understanding of these processes could enable the realization of key applications in diverse fields such as topological phononics, information technologies, sensing, and quantum electrodynamics, especially when integrated with existing electronic and photonic devices. Here, we highlight seven of the available methods for the excitation and detection of acoustic phonons and vibrations in solid materials, as well as advantages, disadvantages, and additional considerations related to their application. We then provide perspectives towards open challenges in nanophononics and how the additional understanding granted by these techniques could serve to enable the next generation of phononic technological applications.
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Affiliation(s)
- Ryan C Ng
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
| | | | - Francisco Cespedes
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
- Departamento de Física, Universidad Autónoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
| | - Martin Poblet
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
| | - Guilhem Madiot
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
| | - Juliana Jaramillo-Fernandez
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
| | - Omar Florez
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
- Departamento de Física, Universidad Autónoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
| | - Peng Xiao
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
- Departamento de Física, Universidad Autónoma de Barcelona, Bellaterra, 08193 Barcelona, Spain
| | - Marianna Sledzinska
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
| | - Clivia M Sotomayor-Torres
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
- ICREA, Passeig Lluis Companys 23, 08010 Barcelona, Spain
| | - Emigdio Chavez-Angel
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and BIST, Campus UAB, Bellaterra, 08193 Barcelona, Spain.
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5
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Knobloch JL, McBennett B, Bevis CS, Yazdi S, Frazer TD, Adak A, Nelson EE, Hernández-Charpak JN, Cheng HY, Grede AJ, Mahale P, Nova NN, Giebink NC, Mallouk TE, Badding JV, Kapteyn HC, Abad B, Murnane MM. Structural and Elastic Properties of Empty-Pore Metalattices Extracted via Nondestructive Coherent Extreme UV Scatterometry and Electron Tomography. ACS APPLIED MATERIALS & INTERFACES 2022; 14:41316-41327. [PMID: 36054507 DOI: 10.1021/acsami.2c09360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Semiconductor metalattices consisting of a linked network of three-dimensional nanostructures with periodicities on a length scale <100 nm can enable tailored functional properties due to their complex nanostructuring. For example, by controlling both the porosity and pore size, thermal transport in these phononic metalattices can be tuned, making them promising candidates for efficient thermoelectrics or thermal rectifiers. Thus, the ability to characterize the porosity, and other physical properties, of metalattices is critical but challenging, due to their nanoscale structure and thickness. To date, only metalattices with high porosities, close to the close-packing fraction of hard spheres, have been studied experimentally. Here, we characterize the porosity, thickness, and elastic properties of a low-porosity, empty-pore silicon metalattice film (∼500 nm thickness) with periodic spherical pores (∼tens of nanometers), for the first time. We use laser-driven nanoscale surface acoustic waves probed by extreme ultraviolet scatterometry to nondestructively measure the acoustic dispersion in these thin silicon metalattice layers. By comparing the data to finite element models of the metalattice sample, we can extract Young's modulus and porosity. Moreover, by controlling the acoustic wave penetration depth, we can also determine the metalattice layer thickness and verify the substrate properties. Additionally, we utilize electron tomography images of the metalattice to verify the geometry and validate the porosity extracted from scatterometry. These advanced characterization techniques are critical for informed and iterative fabrication of energy-efficient devices based on nanostructured metamaterials.
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Affiliation(s)
- Joshua L Knobloch
- Department of Physics, JILA, and STROBE NSF Science & Technology Center, University of Colorado and NIST, Boulder, Colorado 80309, United States
| | - Brendan McBennett
- Department of Physics, JILA, and STROBE NSF Science & Technology Center, University of Colorado and NIST, Boulder, Colorado 80309, United States
| | - Charles S Bevis
- Department of Physics, JILA, and STROBE NSF Science & Technology Center, University of Colorado and NIST, Boulder, Colorado 80309, United States
| | - Sadegh Yazdi
- Renewable and Sustainable Energy Institute and the Materials Science & Engineering Program, University of Colorado, Boulder, Colorado 80309, United States
| | - Travis D Frazer
- Department of Physics, JILA, and STROBE NSF Science & Technology Center, University of Colorado and NIST, Boulder, Colorado 80309, United States
| | - Amitava Adak
- Department of Physics, JILA, and STROBE NSF Science & Technology Center, University of Colorado and NIST, Boulder, Colorado 80309, United States
| | - Emma E Nelson
- Department of Physics, JILA, and STROBE NSF Science & Technology Center, University of Colorado and NIST, Boulder, Colorado 80309, United States
| | - Jorge N Hernández-Charpak
- Department of Physics, JILA, and STROBE NSF Science & Technology Center, University of Colorado and NIST, Boulder, Colorado 80309, United States
| | - Hiu Y Cheng
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Alex J Grede
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Pratibha Mahale
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Nabila Nabi Nova
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Noel C Giebink
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Thomas E Mallouk
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - John V Badding
- Department of Chemistry and Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Henry C Kapteyn
- Department of Physics, JILA, and STROBE NSF Science & Technology Center, University of Colorado and NIST, Boulder, Colorado 80309, United States
- KMLabs Incorporated, 4775 Walnut Street, Building 102, Boulder, Colorado 80301, United States
| | - Begoña Abad
- Department of Physics, JILA, and STROBE NSF Science & Technology Center, University of Colorado and NIST, Boulder, Colorado 80309, United States
| | - Margaret M Murnane
- Department of Physics, JILA, and STROBE NSF Science & Technology Center, University of Colorado and NIST, Boulder, Colorado 80309, United States
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6
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Colombano MF, Arregui G, Capuj NE, Pitanti A, Maire J, Griol A, Garrido B, Martinez A, Sotomayor-Torres CM, Navarro-Urrios D. Synchronization of Optomechanical Nanobeams by Mechanical Interaction. PHYSICAL REVIEW LETTERS 2019; 123:017402. [PMID: 31386408 DOI: 10.1103/physrevlett.123.017402] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/16/2018] [Indexed: 06/10/2023]
Abstract
The synchronization of coupled oscillators is a phenomenon found throughout nature. Mechanical oscillators are paradigmatic examples, but synchronizing their nanoscaled versions is challenging. We report synchronization of the mechanical dynamics of a pair of optomechanical crystal cavities that, in contrast to previous works performed in similar objects, are intercoupled with a mechanical link and support independent optical modes. In this regime they oscillate in antiphase, which is in agreement with the predictions of our numerical model that considers reactive coupling. We also show how to temporarily disable synchronization of the coupled system by actuating one of the cavities with a heating laser, so that both cavities oscillate independently. Our results can be upscaled to more than two cavities and pave the way towards realizing integrated networks of synchronized mechanical oscillators.
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Affiliation(s)
- M F Colombano
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain
- Dept. de Fìsica, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - G Arregui
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain
- Dept. de Fìsica, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain
| | - N E Capuj
- Depto. Física, Universidad de La Laguna, 38200 San Cristóbal de La Laguna, Spain
- Instituto Universitario de Materiales y Nanotecnología, Universidad de La Laguna, 38071 Santa Cruz de Tenerife, Spain
| | - A Pitanti
- NEST, CNR-Istituto Nanoscienze and Scuola Normale Superiore, Piazza San Silvestro 12, 56127 Pisa, Italy
| | - J Maire
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain
| | - A Griol
- Nanophotonics Technology Center, Universitat Politècnica de Valencia, 46022 Valencia, Spain
| | - B Garrido
- MIND-IN2UB, Departament d'Enginyerìa Electrònica i Biomèdica, Facultat de Fìsica, Universitat de Barcelona, Martì i Franquès 1, 08028 Barcelona, Spain
| | - A Martinez
- Nanophotonics Technology Center, Universitat Politècnica de Valencia, 46022 Valencia, Spain
| | - C M Sotomayor-Torres
- Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology, Campus UAB, Bellaterra, 08193 Barcelona, Spain
- ICREA-Instituciò Catalana de Recerca i Estudis Avançats, 08010 Barcelona, Spain
| | - D Navarro-Urrios
- MIND-IN2UB, Departament d'Enginyerìa Electrònica i Biomèdica, Facultat de Fìsica, Universitat de Barcelona, Martì i Franquès 1, 08028 Barcelona, Spain
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7
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Huang J, Karim MF, Wu J, Chen T, Liu A. Parametric Excitation of Optomechanical Resonators by Periodical Modulation. MICROMACHINES 2018; 9:mi9040193. [PMID: 30424126 PMCID: PMC6187312 DOI: 10.3390/mi9040193] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Revised: 04/04/2018] [Accepted: 04/17/2018] [Indexed: 01/23/2023]
Abstract
Optical excitation of mechanical resonators has long been a research interest, since it has great applications in the physical and engineering field. Previous optomechanical methods rely on the wavelength-dependent, optical anti-damping effects, with the working range limited to the blue-detuning range. In this study, we experimentally demonstrated the excitation of optomechanical resonators by periodical modulation. The wavelength working range was extended from the blue-detuning to red-detuning range. This demonstration will provide a new way to excite mechanical resonators and benefit practical applications, such as optical mass sensors and gyroscopes with an extended working range.
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Affiliation(s)
- Jianguo Huang
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
- School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.
| | - Muhammad Faeyz Karim
- School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.
| | - Jiuhui Wu
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Tianning Chen
- School of Mechanical Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
| | - Aiqun Liu
- School of Electrical & Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.
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8
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Navarro-Urrios D, Capuj NE, Maire J, Colombano M, Jaramillo-Fernandez J, Chavez-Angel E, Martin LL, Mercadé L, Griol A, Martínez A, Sotomayor-Torres CM, Ahopelto J. Nanocrystalline silicon optomechanical cavities. OPTICS EXPRESS 2018; 26:9829-9839. [PMID: 29715929 DOI: 10.1364/oe.26.009829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 03/22/2018] [Indexed: 06/08/2023]
Abstract
Silicon on insulator photonics has offered a versatile platform for the recent development of integrated optomechanical circuits. However, there are some constraints such as the high cost of the wafers and limitation to a single physical device level. In the present work we investigate nanocrystalline silicon as an alternative material for optomechanical devices. In particular, we demonstrate that optomechanical crystal cavities fabricated of nanocrystalline silicon have optical and mechanical properties enabling non-linear dynamical behaviour and effects such as thermo-optic/free-carrier-dispersion self-pulsing, phonon lasing and chaos, all at low input laser power and with typical frequencies as high as 0.3 GHz.
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9
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Nonlinear dynamics and chaos in an optomechanical beam. Nat Commun 2017; 8:14965. [PMID: 28397813 PMCID: PMC5394270 DOI: 10.1038/ncomms14965] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Accepted: 02/16/2017] [Indexed: 11/14/2022] Open
Abstract
Optical nonlinearities, such as thermo-optic mechanisms and free-carrier dispersion, are often considered unwelcome effects in silicon-based resonators and, more specifically, optomechanical cavities, since they affect, for instance, the relative detuning between an optical resonance and the excitation laser. Here, we exploit these nonlinearities and their intercoupling with the mechanical degrees of freedom of a silicon optomechanical nanobeam to unveil a rich set of fundamentally different complex dynamics. By smoothly changing the parameters of the excitation laser we demonstrate accurate control to activate two- and four-dimensional limit cycles, a period-doubling route and a six-dimensional chaos. In addition, by scanning the laser parameters in opposite senses we demonstrate bistability and hysteresis between two- and four-dimensional limit cycles, between different coherent mechanical states and between four-dimensional limit cycles and chaos. Our findings open new routes towards exploiting silicon-based optomechanical photonic crystals as a versatile building block to be used in neurocomputational networks and for chaos-based applications. In optomechanics, optical nonlinearities are usually regarded as detrimental and efforts are made to minimize their effects. Here, the authors study the complex dynamics, including chaos, arising from the coupling of such optical nonlinearities with the mechanical modes of a silicon nanobeam cavity.
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10
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Huang Y, Flores JGF, Cai Z, Wu J, Yu M, Kwong DL, Wen G, Churchill L, Wong CW. Controllable optomechanical coupling and Drude self-pulsation plasma locking in chip-scale optomechanical cavities. OPTICS EXPRESS 2017; 25:6851-6859. [PMID: 28381027 DOI: 10.1364/oe.25.006851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
We demonstrate the controllable optomechanical coupling and Drude self-pulsation plasma locking in chip-scale optomechanical cavities. The optomechanical coupling between the optical and mechanical degrees-of-freedom is dependent on the intracavity energy via the coupled fiber position. With the deterministic optomechanical stiffening, the interaction between optomechanical oscillation and self-pulsation can be controlled. Intracavity locking with 1/6 subharmonics is obtained over a wide optical detuning range of 190.01-192.23 THz. These results bring new insights into implementations of nonlinear dynamics at mesoscopic scale, with potential applications from photonic signal processing to nonlinear dynamic networks.
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