Results 11 to 20 of about 1,991 (215)

A random laser as a dynamical network

New Journal of Physics, 2014
The mode dynamics of a random laser is investigated in experiment and theory. The laser consists of a ZnCdO/ZnO multiple quantum well with air-holes that provide the necessary feedback.
M Höfner, H-J Wünsche, F Henneberger
doaj   +4 more sources

Internal modulation of a random fiber laser [PDF]

Optics Letters, 2013
A characterization of a modulated random mirror laser has been experimentally carried out. Unlike conventional internally modulated fiber lasers, no distortion of the modulating frequency or self-mode-locking effects were measured. The behavior of the laser using pulsed and analog modulation up to 12 GHz is shown.
Manuel López-Amo
exaly   +5 more sources

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, Bismarck C. Lima, Pablo I. R. Pincheira, Arthur A. Brum, Antônio M. S. Macêdo, Giovani L. Vasconcelos, Leonardo de S. Menezes, Ernesto P. Raposo, Anderson S. L. Gomes, Raman Kashyap   +9 more
doaj   +4 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, Mingqing Yang, Shiyu Zhang, Chunhui Niu, Yong Lv   +4 more
doaj   +1 more source

Random Laser Based on Ytterbium-Doped Fiber with a Bragg Grating Array as the Source of Continuous-Wave 976 nm Wavelength Radiation

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, Sergei Popov, Dmitry Ryakhovskiy, Alexey Abramov, Andrey Umnikov, Oleg Medvedkov, Viktor Voloshin, Alexander Kolosovskii, Igor Vorob’ev, Yuriy Chamorovskiy, Denis Lipatov   +10 more
doaj   +1 more source

A White Random Laser [PDF]

Scientific Reports, 2018
AbstractRandom laser with intrinsically uncomplicated fabrication processes, high spectral radiance, angle-free emission, and conformal onto freeform surfaces is in principle ideal for a variety of applications, ranging from lighting to identification systems. In this work, a white random laser (White-RL) with high-purity and high-stability is designed,
Shu-Wei Chang, Wei-Cheng Liao, Yu-Ming Liao, Hung-I Lin, Hsia-Yu Lin, Wei-Ju Lin, Shih-Yao Lin, Packiyaraj Perumal, Golam Haider, Chia-Tse Tai, Kun-Ching Shen, Cheng-Han Chang, Yuan-Fu Huang, Tai-Yuan Lin, Yang-Fang Chen   +14 more
openaire   +2 more sources

Modes of random lasers [PDF]

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., Asatryan A. A., Botten L. C., Byrne M. A., Cao H., Ge L., Labonte L., Sebbah P., Stone A. D., Tureci H. E., Vanneste C.   +10 more
openaire   +2 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., Hameed Mohammed. A., Latif Kamil H., AL-Maliki Firas J.   +3 more
doaj   +1 more source

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, Hongyu Yuan, Yaoxing Bian, Junyan Li, Weinian Liu, Hanyi Xue, Zhaona Wang   +6 more
doaj   +1 more source

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, Sergei Popov, Denis Lipatov, Andrey Umnikov, Alexey Abramov, Oleg Morozov, Dmitry Ryakhovskiy, Viktor Voloshin, Alexander Kolosovskii, Igor Vorob’ev, Oleg Butov, Yuriy Chamorovskiy   +11 more
doaj   +1 more source