Results 11 to 20 of about 170,298 (303)
, 2015 Consejo Superior de Investigaciones Científicas (España)
Consoli, Antonio, López, Cefe
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Experimental phase diagram for random laser spectra [PDF]
New Journal of Physics, 2012 We systematically study the presence of narrow spectral features in a wide variety of random laser samples. Less gain or stronger scattering are shown to lead to a crossover from spiky to smooth spectra. A decomposition of random laser spectra into a set
Ramy G S El-Dardiry +2 more
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Perovskite Random Lasers, Process and Prospects
Micromachines, 2022 Random lasers (RLs) are a kind of coherent light source with optical feedback based on disorder-induced multiple scattering effects instead of a specific cavity. The unique feedback mechanism makes RLs different from conventional lasers.
Lei Wang +4 more
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Flexible Random Laser Using Silver Nanoflowers [PDF]
Polymers, 2019 Junhua Tong, Songtao Li, Yulan Fu
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Photonics, 2022 A random narrow-linewidth lasing at a wavelength of 976 nm was obtained in an ytterbium-doped germanophosphosilicate fiber with an array of weakly reflecting fiber Bragg gratings (FBGs). A random laser cavity was formed by implementing the standard phase
Andrey Rybaltovsky +10 more
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Advances in Optics and Photonics, 2010 In conventional lasers, the optical cavity that confines the photons also determines essential characteristics of the lasing modes such as wavelength, emission pattern, ... In random lasers, which do not have mirrors or a well-defined cavity, light is confined within the gain medium by means of multiple scattering.
Andreasen J. +10 more
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Transition from amplified spontaneous emission to laser action in disordered media of R6G dye and TiO2 nanoparticles doped with PMMA polymer [PDF]
Journal of the European Optical Society-Rapid Publications, 2011 A random laser (RL) based on organic Rhodamine 6G (R6G) laser-dye and TiO2 suspended nanoparticles have been prepared with poly-methylmethacrylate (PMMA) as a host.
Chiad Baha. T. +3 more
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Angular Spectra Tunable Random Lasing for High Contrast Imaging
Advanced Physics Research, 2023 Random lasers with low spatial coherence have important potential applications in speckle‐free imaging and displaying. Here, an angular spectra (AS) tunable random laser is proposed through directly coupling a microcavity with a commercial optical fiber.
Huihui Shen +6 more
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Photosensitive Yb-Doped Germanophosphosilicate Artificial Rayleigh Fibers as a Base of Random Lasers
Fibers, 2021 Asingle-mode Yb-doped germanophosphosilicate fiber with ultra-low optical losses (less than 2 dB/km) was fabricated by means of the MCVD method utilizing an all-gas-phase deposition technique developed “in house”.
Andrey Rybaltovsky +11 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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