Results 271 to 280 of about 170,298 (303)
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Random-wavelength solid-state laser
Optics Letters, 2004The spectral properties of a diode-pumped Yb:Y2O3 ceramic laser are reported. We show experimentally that the instantaneous emission wavelengths of the laser change randomly with time, whereas its emission has fixed well-defined transverse modes. The central wavelength of the laser emission also shifts prominently with the increase of intracavity light
J, Kong, D Y, Tang, J, Lu, K, Ueda
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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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Chaotic Behavior of Random Lasers
2010Light transport in disordered systems can be described as a multiple scattering process in which light waves are multiply scattered by random variations of the refractive index of the material. This has close analogies with other transport phenomena, such as electrons in a conducting material, sounds waves in random structures, and even matter waves. A
WIERSMA, DIEDERIK SYBOLT +5 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
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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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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 and applications of random lasers
2014 The European Conference on Optical Communication (ECOC), 2014Hui Cao +2 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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