Results 21 to 30 of about 527,555 (282)
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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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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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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Photonics, 2023 We studied the properties of ultra-narrow spectral modes, appearing in random distributed feedback Raman fiber lasers, for different fibers building up a laser cavity.
Ilya D. Vatnik +2 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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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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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 cold-atom random laser [PDF]
, 2013 Conventional lasers make use of optical cavities to provide feedback to gain media. Conversely, mirrorless lasers can be built by using disordered structures to induce multiple scattering, which increases the effective path length in the gain medium and ...
Baudouin, Quentin +4 more
core +2 more sources
Waveguided nematic liquid crystal random lasers
Nanophotonics, 2021 In waveguided nematic liquid crystal random lasers (NLCRLs), we realize polarized random laser (RL) emission and discover that the waveguide effect reduces the transmission loss of the RL whose polarization is parallel to the liquid crystal molecules ...
Huang Yunxi +7 more
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Advances in Random Fiber Lasers and Their Sensing Application
Sensors, 2020 Compared with conventional laser, random laser (RL) has no resonant cavity, reducing the requirement of cavity design. In recent years, the random fiber laser (RFL), a novel kind of RL, has made great progress in theories and experiments.
Hong Chen +9 more
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