Results 11 to 20 of about 527,555 (282)
Turbulence hierarchy in a random fibre laser [PDF]
Nature Communications, 2017 Random fibre lasers constitute a class of lasers where the optical feedback is provided by multiple scattering in a disordered system. Here, Gonzálezet al.
Iván R. Roa González +9 more
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Speckle-free laser imaging using random laser illumination [PDF]
Nature Photonics, 2012 Exploiting the low spatial coherence of specifically designed random lasers, researchers demonstrate speckle-free full-field imaging in the regime of intense optical scattering. Their results show that the quality of images generated from random-laser illumination is superior to those generated from spatially coherent illumination.
Brandon, Redding +2 more
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Random distributed feedback fibre lasers
Physics Reports, 2014 The concept of random lasers making use of multiple scattering in amplifying disordered media to generate coherent light has attracted a great deal of attention in recent years. Here, we demonstrate a fibre laser with a mirrorless open cavity that operates via Rayleigh scattering, amplified through the Raman effect.
Sergei K. Turitsyn +5 more
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Colloidal quantum dot random laser
Optics Express, 2011 We report random laser action in a system where optical amplification is provided by colloidal quantum dots (CQDs). This system is obtained by depositing from solution CdSe/ZnS core-shell CQDs into rough micron-scale grooves fabricated on the surface of a glass substrate.
Chen, Yujie +7 more
openaire +5 more sources
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
doaj +1 more source
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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Quantitative analysis of several random lasers [PDF]
, 2006 We prescribe the minimal set of experimental data and parameters that should be reported for random-laser experiments and models. This prescript allows for a quantitative comparison between different experiments, and for a criterion whether a model ...
Ad Lagendijk +22 more
core +10 more sources
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
doaj +1 more source
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 250 nm rutile (TiO2) particles in a rhodamine 6G solution was inserted into the hollow core of a photonic crystal fiber generating the first random fiber laser and
de Matos, Christiano J. S. +5 more
openaire +4 more sources