Results 181 to 190 of about 1,991 (215)
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Amplified Extended Modes in Random Lasers
Physical Review Letters, 2004We report on a new random laser phenomenon that gives rise to narrow emission modes without requiring optical cavities. Sharp emission peaks are observed experimentally over a broad range of scattering strengths and analyzed in numerical calculations.
MUJUMDAR S. +3 more
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Conference on Lasers and Electro-Optics, 2020
Printed random lasers with great versatility, compatibility, and universality can be well adopted by most of the commercial inkjet printers or 3D printers in the mainstream market, promising high application values from lab to fab.
Yi-Zih Chen +3 more
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Printed random lasers with great versatility, compatibility, and universality can be well adopted by most of the commercial inkjet printers or 3D printers in the mainstream market, promising high application values from lab to fab.
Yi-Zih Chen +3 more
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2022
The initial research, on the prospect of building miniaturized high energy efficient lasers, has focused on active random media consisting of dielectric or semiconductor materials. However, research advancements exploiting metallic nanoparticles and nanostructures have found a wide range of applications in laser science from plasmonic random lasers to ...
Naik, Pooja +2 more
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The initial research, on the prospect of building miniaturized high energy efficient lasers, has focused on active random media consisting of dielectric or semiconductor materials. However, research advancements exploiting metallic nanoparticles and nanostructures have found a wide range of applications in laser science from plasmonic random lasers to ...
Naik, Pooja +2 more
openaire +2 more sources
Frontiers in Optics 2004/Laser Science XXII/Diffractive Optics and Micro-Optics/Optical Fabrication and Testing, 2004
We demonstrate two-threshold random laser emission in the mixtures of GaAs powder with Al2O3 powder. The dilution of GaAs powder with Al2O3 powder helps to maximize the output efficiency of the stimulated emission.
M A Noginov, G Zhu, I Fowlkes, M Bahoura
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We demonstrate two-threshold random laser emission in the mixtures of GaAs powder with Al2O3 powder. The dilution of GaAs powder with Al2O3 powder helps to maximize the output efficiency of the stimulated emission.
M A Noginov, G Zhu, I Fowlkes, M Bahoura
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Beta factor in a random laser.
Physical review. E, Statistical, nonlinear, and soft matter physics, 2002We develop a definition for the beta factor, the fraction of spontaneous emission that seeds the laser process, for a random laser. With the wavelength-dependence of the gain (and potentially scattering) being the only possible criterion in the competition between gain and loss, our concept of beta is based on the spectral properties of the spontaneous
van Soest, G., Lagendijk, A.
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IET International Conference on Information Science and Control Engineering 2012 (ICISCE 2012), 2012
The random distributed feedback (RDFB) fibre laser that provides stable, spatially incoherent continuous-wave lasing has been proved. It generates the distributed feedback fibre cavity which is formed by the Rayleigh backscattering in the fibre, and its gain is achieved by Raman amplification when the pump light enters into fibre, and its efficiency ...
L.L. Chen, Y.C. Ding, R.X. Teng
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The random distributed feedback (RDFB) fibre laser that provides stable, spatially incoherent continuous-wave lasing has been proved. It generates the distributed feedback fibre cavity which is formed by the Rayleigh backscattering in the fibre, and its gain is achieved by Raman amplification when the pump light enters into fibre, and its efficiency ...
L.L. Chen, Y.C. Ding, R.X. Teng
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2002
Abstract : This report results from a contract tasking FORTH, Foundation for Research & Technology--Hellas as follows: The contractor will synthesize polymer nanocomposite materials and will investigate their properties appropriate to developing a new generation of flexible lasers.
E. P. Giannelis +4 more
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Abstract : This report results from a contract tasking FORTH, Foundation for Research & Technology--Hellas as follows: The contractor will synthesize polymer nanocomposite materials and will investigate their properties appropriate to developing a new generation of flexible lasers.
E. P. Giannelis +4 more
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Physics Today, 2012
The inherent disorder in microfluidic channels may provide an easy road to controllable on-chip lasers.
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The inherent disorder in microfluidic channels may provide an easy road to controllable on-chip lasers.
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Physics and applications of random lasers
2014 The European Conference on Optical Communication (ECOC), 2014Hui Cao +2 more
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2010
The purpose of this chapter is to introduce the concept of a random laser and show how strongly the properties of random lasers depend on the strength of light scattering in a gain medium. Random lasers, theoretically predicted forty years ago and experimentally demonstrated more than twenty years ago, have developed into a large area of research.
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The purpose of this chapter is to introduce the concept of a random laser and show how strongly the properties of random lasers depend on the strength of light scattering in a gain medium. Random lasers, theoretically predicted forty years ago and experimentally demonstrated more than twenty years ago, have developed into a large area of research.
openaire +1 more source