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Abaie B, Mobini E, Karbasi S, Hawkins T, Ballato J, Mafi A. Random lasing in an Anderson localizing optical fiber. LIGHT, SCIENCE & APPLICATIONS 2017; 6:e17041. [PMID: 30167284 PMCID: PMC6062316 DOI: 10.1038/lsa.2017.41] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Revised: 03/06/2017] [Accepted: 03/08/2017] [Indexed: 05/11/2023]
Abstract
A directional random laser mediated by transverse Anderson localization in a disordered glass optical fiber is reported. Previous demonstrations of random lasers have found limited applications because of their multi-directionality and chaotic fluctuations in the laser emission. The random laser presented in this paper operates in the Anderson localization regime. The disorder induced localized states form isolated local channels that make the output laser beam highly directional and stabilize its spectrum. The strong transverse disorder and longitudinal invariance result in isolated lasing modes with negligible interaction with their surroundings, traveling back and forth in a Fabry-Perot cavity formed by the air-fiber interfaces. It is shown that if a localized input pump is scanned across the disordered fiber input facet, the output laser signal follows the transverse position of the pump. Moreover, a uniformly distributed pump across the input facet of the disordered fiber generates a laser signal with very low spatial coherence that can be of practical importance in many optical platforms including image transport with fiber bundles.
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Affiliation(s)
- Behnam Abaie
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA
- Center for High Technology Materials, University of New Mexico, Albuquerque, NM 87106, USA
| | - Esmaeil Mobini
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA
- Center for High Technology Materials, University of New Mexico, Albuquerque, NM 87106, USA
| | - Salman Karbasi
- Department of Electrical and Computer Engineering, University of California, San Diego, CA 92093, USA
| | - Thomas Hawkins
- Center for Optical Materials Science and Engineering Technologies (COMSET) and the Department of Materials Science and Engineering, Clemson University, Clemson, SC 29625, USA
| | - John Ballato
- Center for Optical Materials Science and Engineering Technologies (COMSET) and the Department of Materials Science and Engineering, Clemson University, Clemson, SC 29625, USA
| | - Arash Mafi
- Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131, USA
- Center for High Technology Materials, University of New Mexico, Albuquerque, NM 87106, USA
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Mobini E, Abaie B, Peysokhan M, Mafi A. Spectral selectivity in optical fiber capillary dye lasers. OPTICS LETTERS 2017; 42:1784-1787. [PMID: 28454160 DOI: 10.1364/ol.42.001784] [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 explore the spectral properties of a capillary dye laser in the highly multimode regime. Our experiments indicate that the spectral behavior of the laser does not conform to a simple Fabry-Perot (FP) analysis; rather, it is strongly dictated by a Vernier resonant mechanism involving multiple modes, which propagate with different group velocities. The laser operates over a very broad spectral range and the Vernier effect gives rise to a free spectral range, which is orders of magnitude larger than that expected from a simple FP mechanism. The theoretical calculations presented confirm the experimental results. Propagating modes of the capillary fiber are calculated using the finite-element method and it is shown that the optical path lengths resulting from simultaneous beatings of these modes are in close agreement with the optical path lengths directly extracted from the Fourier transform of the experimentally measured laser emission spectra.
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Zhou H, Feng G, Yao K, Yang C, Yi J, Zhou S. Fiber-based tunable microcavity fluidic dye laser. OPTICS LETTERS 2013; 38:3604-3607. [PMID: 24104825 DOI: 10.1364/ol.38.003604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We investigate a tunable fluidic dye laser formed by a microcavity filled with a dye solution. We achieve a wide 18 nm tunability of the laser wavelength by controlling the cavity length for the first time. The microcavity is made of a silica capillary and two aligned fibers with end faces Au-coated. The Rhodamine 6G dye solution flowing through the microcavity is pumped by 532 nm wavelength laser pulses. Laser emission around 570 nm in the form of TE mode with a threshold of about 58 μJ/pulse is obtained. This work suggests a fiber-based convenient approach to achieve wavelength tunability and integration with lab-on-a-chip systems.
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Choi EY, Mager L, Cham TT, Dorkenoo KD, Fort A, Wu JW, Barsella A, Ribierre JC. Solvent-free fluidic organic dye lasers. OPTICS EXPRESS 2013; 21:11368-11375. [PMID: 23669993 DOI: 10.1364/oe.21.011368] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We report on the demonstration of liquid organic dye lasers based on 9-(2-ethylhexyl)carbazole (EHCz), so-called liquid carbazole, doped with green- and red-emitting laser dyes. Both waveguide and Fabry-Perot type microcavity fluidic organic dye lasers were prepared by capillary action under solvent-free conditions. Cascade Förster-type energy transfer processes from liquid carbazole to laser dyes were employed to achieve color-variable amplified spontaneous emission and lasing. Overall, this study provides the first step towards the development of solvent-free fluidic organic semiconducting lasers and demonstrates a new kind of optoelectronic applications for liquid organic semiconductors.
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Affiliation(s)
- Eun Young Choi
- Department of Physics, CNRS-Ewha International Research Center, Ewha Womans University, Seoul 120-750, South Korea
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Candiani A, Konstantaki M, Margulis W, Pissadakis S. Optofluidic magnetometer developed in a microstructured optical fiber. OPTICS LETTERS 2012; 37:4467-4469. [PMID: 23114331 DOI: 10.1364/ol.37.004467] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
A directional, in-fiber optofluidic magnetometer based on a microstructured optical fiber (MOF) Bragg-grating infiltrated with a ferrofluidic defect is presented. Upon application of a magnetic field, the ferrofluidic defect moves along the length of the MOF Bragg grating, modifying its reflection spectrum. The magnetometer is capable of measuring magnetic fields from 317 to 2500 G. The operational principle of such in-fiber magnetic field probe allows the elaboration of directional measurements of the magnetic field flux.
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Affiliation(s)
- A Candiani
- Foundation for Research and Technology-Hellas, Institute of Electronic Structure and Laser, Heraklion, Greece
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Song W, Vasdekis AE, Psaltis D. Elastomer based tunable optofluidic devices. LAB ON A CHIP 2012; 12:3590-3597. [PMID: 22864365 DOI: 10.1039/c2lc40481h] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The synergetic integration of photonics and microfluidics has enabled a wide range of optofluidic devices that can be tuned based on various physical mechanisms. One such tuning mechanism can be realized based on the elasticity of polydimethylsiloxane (PDMS). The mechanical tuning of these optofluidic devices was achieved by modifying the geometry of the device upon applying internal or external forces. External or internal forces can deform the elastomeric components that in turn can alter the optical properties of the device or directly induce flow. In this review, we discuss recent progress in tunable optofluidic devices, where tunability is enabled by the elasticity of the construction material. Different subtypes of such tuning methods will be summarized, namely tuning based on bulk or membrane deformations, and pneumatic actuation.
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Affiliation(s)
- Wuzhou Song
- School of Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH-1015, Lausanne, Switzerland
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Gerosa RM, Spadoti DH, de Matos CJS, Menezes LDS, Franco MAR. Efficient and short-range light coupling to index-matched liquid-filled hole in a solid-core photonic crystal fiber. OPTICS EXPRESS 2011; 19:24687-24698. [PMID: 22109496 DOI: 10.1364/oe.19.024687] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A photonic crystal fiber (PCF) with a section of one of the holes next to the solid core filled with an index-matched liquid is studied. Liquid filling alters the core geometry, which locally comprises the original silica core, the liquid channel and the silica around it. It is demonstrated that when light reaches the filled section, it periodically and efficiently couples to the liquid, via the excitation of a number of modes of the composite core, with coupling lengths ranging from tens to hundreds of microns. The resulting modal-interference-modulated spectrum shows temperature sensitivity as high as 5.35 nm/°C. The proposed waveguide geometry presents itself as an interesting way to pump and/or to probe liquid media within the fiber, combining advantages usually found separately in liquid-filled hollow-core PCFs (high light-liquid overlap) and in solid-core PCFs (low insertion losses). Therefore, pumping and luminescence guiding with a PCF filled with a Rhodamine solution is also demonstrated.
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Affiliation(s)
- Rodrigo M Gerosa
- Grupo de Fotônica do Mackenzie, Universidade Presbiteriana Mackenzie, Rua da Consolação 930, São Paulo, SP, Brazil.
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Calixto S, Rosete-Aguilar M, Sanchez-Marin FJ, Marañon V, Arauz-Lara JL, Olivares DM, Calixto-Solano M, Martinez-Prado EM. Optofluidic compound microlenses made by emulsion techniques. OPTICS EXPRESS 2010; 18:18703-18711. [PMID: 20940763 DOI: 10.1364/oe.18.018703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Here we present a new method to make liquid lenses. It is based on the microfluidics method and involves the preparation of emulsions one drop at a time. Tests of lenses by image formation are presented. Experimental results are compared with results of an optical design program. We also present a new type of lens that we call a Compound Lens which consists of two spherical lenses, one inside the other.
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Affiliation(s)
- Sergio Calixto
- Centro de Investigaciones en Optica, Loma del Bosque 115, Leon, Gto. c.p. 37150, Mexico
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Amplified spontaneous emission properties of semiconducting organic materials. Int J Mol Sci 2010; 11:2546-65. [PMID: 20640167 PMCID: PMC2904931 DOI: 10.3390/ijms11062546] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2010] [Accepted: 06/10/2010] [Indexed: 11/22/2022] Open
Abstract
This paper aims to review the recent advances achieved in the field of organic solid-state lasers with respect to the usage of semiconducting organic molecules and oligomers in the form of thin films as active laser media. We mainly focus on the work performed in the last few years by our research group. The amplified spontaneous emission (ASE) properties, by optical pump, of various types of molecules doped into polystyrene films in waveguide configuration, are described. The various systems investigated include N,N′-bis(3-methylphenyl)-N,N′-diphenylbenzidine (TPD), several perilenediimide derivatives (PDIs), as well as two oligo-phenylenevinylene derivatives. The ASE characteristics, i.e., threshold, emission wavelength, linewidth, and photostability are compared with that of other molecular materials investigated in the literature.
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Gopalakrishnan N, Sagar KS, Christiansen MB, Vigild ME, Ndoni S, Kristensen A. UV patterned nanoporous solid-liquid core waveguides. OPTICS EXPRESS 2010; 18:12903-12908. [PMID: 20588419 DOI: 10.1364/oe.18.012903] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Nanoporous Solid-Liquid core waveguides were prepared by UV induced surface modification of hydrophobic nanoporous polymers. With this method, the index contrast (deltan = 0.20) is a result of selective water infiltration. The waveguide core is defined by UV light, rendering the exposed part of a nanoporous polymer block hydrophilic. A propagation loss of 0.62 dB/mm and a bend loss of 0.81 dB/90 degrees for bend radius as low as 1.75 mm was obtained in these multimode waveguides.
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Affiliation(s)
- Nimi Gopalakrishnan
- Department of Micro and Nanotechnology, Technical University of Denmark, DTU Nanotech, Building 345 East, DK-2800 Kongens Lyngby, Denmark.
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Calzado EM, Villalvilla JM, Boj PG, Quintana JA, Postigo PA, Díaz-García MA. Blue surface-emitting distributed feedback lasers based on TPD-doped films. APPLIED OPTICS 2010; 49:463-470. [PMID: 20090812 DOI: 10.1364/ao.49.000463] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Single-mode second-order distributed feedback (DFB) lasers with low threshold, based on polystyrene films doped with 30 wt. % of the hole-transporting organic molecule N,N'-bis (3-methylphenyl)-N,N'-diphenylbenzidine (TPD) are reported. The laser emission wavelength was tuned between 415 and 427 nm by film thickness variation. The effectiveness of the DFB grating in improving the laser performance is evidenced by the observation of linewidths and laser thresholds lower than those of the amplified spontaneous emission characteristics shown by films without gratings. The use of holographic lithography as the technique for grating recording has allowed us to prepare large samples in a fast, versatile, and simple manner.
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Affiliation(s)
- Eva M Calzado
- Instituto Universitario de Materiales de Alicante (IUMA), Universidad de Alicante, 03080 Alicante, Spain
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Calixto S, Sánchez-Marin FJ, Sánchez-Morales ME. Pressure measurements through image analysis. OPTICS EXPRESS 2009; 17:17996-18002. [PMID: 19907589 DOI: 10.1364/oe.17.017996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Here we propose a new optical method, to our knowledge, to measure the pressure in liquids or gases by means of a flexible lens. Images of an object given by the dynamical lens are analyzed, and through the visibility of those images pressure is inferred.
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Affiliation(s)
- Sergio Calixto
- Centro de Investigaciones en Optica, Loma del Bosque 115, Leon, Gto. C.p. 37150, Mexico.
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Malmström M, Yu Z, Margulis W, Tarasenko O, Laurell F. All-fiber cavity dumping. OPTICS EXPRESS 2009; 17:17596-17602. [PMID: 19907544 DOI: 10.1364/oe.17.017596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Cavity dumping of an all-fiber laser system is demonstrated. The active element is a pulse-picker with nanosecond rise time consisting of a microstructured fiber with electrically driven internal electrodes. The device is used for intracavity polarization rotation and dumping through a polarization splitter. The optical flux is removed from the cavity within one roundtrip and most of the amplified spontaneous emission, spiking and relaxation oscillation that follow during the gain recovery phase of the laser are blocked from the output signal.
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Affiliation(s)
- M Malmström
- Department of Applied Physics, Royal Institute of Technology (KTH), Roslagstullbacken 2,10691 Stockholm, Sweden.
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Calzado EM, Boj PG, Díaz-García MA. Optimization of the Laser Properties of Polymer Films Doped with N,N´-Bis(3-methylphenyl)-N,N´-diphenylbenzidine. MATERIALS 2009. [PMCID: PMC5445749 DOI: 10.3390/ma2031288] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Eva M. Calzado
- Dpto. Física, Ingeniería de Sistemas y Teoría de la Señal and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante-03080, Spain; E-Mail: (E.M.C.)
| | - Pedro G. Boj
- Dpto. Óptica and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante-03080, Spain; E-Mail: (P.G.B.)
| | - María A. Díaz-García
- Dpto. Física Aplicada, Unidad asociada UA-CSIC and Instituto Universitario de Materiales de Alicante, Universidad de Alicante, Alicante-03080, Spain
- Author to whom correspondence should be addressed; E-Mails: (M.A.D-G.); Tel. +34-965903543; Fax: +34-965909726
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de Matos CJS, de S Menezes L, Brito-Silva AM, Martinez Gámez MA, Gomes ASL, de Araújo CB. Random fiber laser. PHYSICAL REVIEW LETTERS 2007; 99:153903. [PMID: 17995168 DOI: 10.1103/physrevlett.99.153903] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2007] [Indexed: 05/25/2023]
Abstract
We investigate the effects of two-dimensional confinement on the lasing properties of a classical random laser system operating in the incoherent feedback (diffusive) regime. A suspension of 250 nm rutile (TiO2) particles in a rhodamine 6G solution was inserted into the hollow core of a photonic crystal fiber generating the first random fiber laser and a novel quasi-one-dimensional random laser geometry. A comparison with similar systems in bulk format shows that the random fiber laser presents an efficiency that is at least 2 orders of magnitude higher.
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Affiliation(s)
- Christiano J S de Matos
- Programa de Pós-Graduação em Engenharia Elétrica and Faculdade de Computação e Informática, Universidade Presbiteriana Mackenzie, São Paulo-SP 01302-907, Brazil.
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