Results 21 to 30 of about 1,991 (215)
Large-Area Biocompatible Random Laser for Wearable Applications
Nanomaterials, 2021 Recently, wearable sensor technology has drawn attention to many health-related appliances due to its varied existing optical, electrical, and mechanical applications.
Kun Ge +6 more
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1337 nm Emission of a Nd3+-Doped TZA Glass Random Laser
Nanomaterials, 2023 Random lasers have been studied using many materials, but only a couple have used glass matrices. Here, we present a study of zinc tellurite and aluminum oxide doped with different percentages of neodymium oxide (4 wt.%, 8 wt.%, and 16 wt.%) and ...
Jessica Dipold +5 more
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A glassy model for random lasers [PDF]
Philosophical Magazine, 2007 We report oil a recent model introduced to describe the behaviour Of light in a nonlinear active random medium, i.e., laser. The emitted radiation is described by I disordered mean-field Hamiltonian for the phases of the complex amplitudes of the electromagnetic field modes. Using the replica trick the thermodynamics can be exactly solved.
L. ANGELANI +3 more
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External Electric Field Tailored Spatial Coherence of Random Lasing
Crystals, 2022 In this study, spatial coherence tunable random lasing is proposed by designing a random laser with separate coupling configuration between the gain medium and the scattering part.
Yaoxing Bian +5 more
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Coherent instabilities in random lasers [PDF]
Physical Review A, 2011 A numerical study is presented of random lasers as a function of the pumping rate above the threshold for lasing. Depending on the leakiness of the system resonances, which is typically larger in random lasers compared to conventional lasers, we observe that the stationary lasing regime becomes unstable above a second threshold.
Andreasen, Jonathan +2 more
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Physical Review Letters, 2007 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 250nm rutile (TiO2) particles in a Rhodamine 6G solution was inserted into the hollow core of a photonic crystal fiber (PCF) generating the first random fiber ...
de Matos, Christiano J. S. +5 more
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Random Laser Action in Dye-Doped Polymer Media with Inhomogeneously Distributed Particles and Gain
Applied Sciences, 2019 The properties of random lasing are investigated for bubble-structure (BS) dye-doped polymer random media in which non-scattering and no-gain regions are distributed.
Takashi Okamoto, Masaki Mori
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Molecules, 2021 Quinoline Schiff bases display potential applications in optoelectronics and laser fields because of their unique optical properties that arise from extensive delocalization of the electron cloud, and a high order of non-linearity. In this context, a new
Abdulrahman I. Almansour +6 more
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Optics Express, 2005 A microchip-type laser with multiple scattering from powder as necessary feedback is demonstrated. The laser consists of a transparent ceramic Nd:YAG microchip and a Nd:YAG powder tablet, operates at quasi-continuous- wave regime pumped by a laser diode array.
Yan, Feng +4 more
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Generation of Narrow Modes in Random Raman Fiber Laser Based on Multimode Fiber
Photonics, 2023 We present a new design of a random Raman fiber laser based on a graded-index multimode fiber as the media composing the cavity that allows the generation of narrow spectral lines.
Ilya D. Vatnik +2 more
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