Results 11 to 20 of about 1,852,020 (244)

Pump-Controlled Plasmonic Random Lasers from Dye-Doped Nematic Liquid Crystals with TiN Nanoparticles in Non-Oriented Cells

open access: yesApplied Sciences, 2019
Manipulation of the performance of the random lasers from dye-doped nematic liquid crystals with TiN nanoparticles in non-oriented cells is studied. The experimental results show that the introduction of TiN nanoparticles into dye-doped nematic liquid ...
Yuan Wan, Luogen Deng
doaj   +2 more sources

Polarization analysis of random THz lasers

open access: yesAPL Photonics, 2021
By varying the geometrical filling factor from 8% to 12% and the hole radius from 3 to 5 µm, we investigate the interference pattern of a set of surface emitting, electrically pumped random lasers (RLs) at terahertz frequencies employing a surface ...
Alessandra Di Gaspare   +1 more
doaj   +1 more source

Perovskite random lasers on fiber facet

open access: yesNanophotonics, 2020
Hybrid lead halide perovskites have made great strides in next-generation photovoltaic and optoelectronic devices. Random lasers based on perovskite materials have been intensively investigated, but the miniaturization of perovskite random lasers has not
Zhang Xiao   +8 more
doaj   +1 more source

Controllable Liquid Crystal Micro Tube Laser

open access: yesCrystals, 2021
This study demonstrates controllable random lasing emissions in a dye-doped nematic liquid crystal (DDNLC)-infiltrated microcapillary. The emission wavelength of the micro tube laser can be adjusted by changing the focusing position of the pumped pulses ...
Jia-De Lin   +5 more
doaj   +1 more source

Networks of random lasers: current perspective and future challenges [Invited]

open access: yes, 2023
Artificial neural networks are widely used in many different applications because of their ability to deal with a range of complex problems generally involving massive data sets.
López, Cefe   +2 more
core   +1 more source

Networks of mutually coupled random lasers

open access: yes, 2021
Random lasers (RLs) rely on light amplification in a gain material with feedback from multiple scattering in disordered media. They are unconventional light sources characterized by multiple narrow peaks emission with high potential in imaging and ...
López, Cefe   +4 more
core   +1 more source

Random microchip laser

open access: yesOptics 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
openaire   +2 more sources

Interband cascade lasers for the mid-infrared spectral region [PDF]

open access: yes, 2014
Financial support of this work by the German Ministry of Education and Research (FKZ: 13N12440) and by the European Commission in the framework of the FP7 project 'WideLase’ (grant no.
Dallner, M.   +7 more
core   +1 more source

Optical materials for flexible and stretchable random lasers

open access: yesOptical Materials: X, 2022
The development of photonic devices has been largely benefitted by the offer of new flexible and stretchable materials. Many innovative components and devices have been developed for light-based applications.
Anderson S.L. Gomes   +4 more
doaj   +1 more source

High-Q, directional and self-assembled random laser emission using spatially localized feedback via cracks

open access: yesAPL Photonics, 2020
Lasers based on Fabry–Pérot or whispering gallery resonators generally require complex fabrication stages and sensitive alignment of cavity configurations.
Itir Bakis Dogru-Yuksel   +6 more
doaj   +1 more source

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