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Dissolvable and Recyclable Random Lasers
ACS Nano, 2017An integrated random laser based on green materials with dissolubility and recyclability is created and demonstrated. The dissolvable and recyclable random laser (DRRL) can be dissolved in water, accompanying the decay of emission intensity and the increment in lasing threshold.
Xiaoyu Shi +10 more
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PARTIALLY PUMPED RANDOM LASERS
International Journal of Modern Physics B, 2014Conventional lasers consist of two components: a gain material that is pumped in order to provide amplification of light and a cavity to provide feedback. Random lasers replace the traditional laser cavity with a random, multiple-scattering medium. This can give rise to complex lasing behavior, such as unpredictable multidirectional and multifrequency
Andreasen, Jonathan +5 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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Physical Review Letters, 2002
We present an analytical approach to random lasing in a one-dimensional medium, consistent with transfer matrix numerical simulations. It is demonstrated that the lasing threshold is defined by transmission through the passive medium and thus depends exponentially on the size of the system.
A L, Burin +3 more
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We present an analytical approach to random lasing in a one-dimensional medium, consistent with transfer matrix numerical simulations. It is demonstrated that the lasing threshold is defined by transmission through the passive medium and thus depends exponentially on the size of the system.
A L, Burin +3 more
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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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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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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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Journal of Optics, 2010
The field of extreme miniature sources of stimulated emission represented by random lasers and nanolasers has gone through an enormous development in recent years. Random lasers are disordered optical structures in which light waves are both multiply scattered and amplified.
Diederik S Wiersma, Mikhail A Noginov
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The field of extreme miniature sources of stimulated emission represented by random lasers and nanolasers has gone through an enormous development in recent years. Random lasers are disordered optical structures in which light waves are both multiply scattered and amplified.
Diederik S Wiersma, Mikhail A Noginov
openaire +1 more source