Controllable random lasers based on two-dimensional random gain systems with nematic liquid crystals
Sign Up to like & getrecommendations! Published in 2021 at "Indian Journal of Physics"
DOI: 10.1007/s12648-021-02109-x
Abstract: Controllable random lasers based on two-dimensional (2D) random gain systems with nematic liquid crystals are investigated by using the finite-difference time-domain (FDTD) methods. The dependence of random lasers on the scattering strength of nematic liquid… read more here.
Keywords: lasers based; controllable random; liquid crystals; nematic liquid ... See more keywords
Random lasers tuning by combining a dye-doped liquid crystal and CdS nanoparticles
Sign Up to like & getrecommendations! Published in 2017 at "Optik"
DOI: 10.1016/j.ijleo.2017.01.031
Abstract: Abstract We report the development of LC (negative liquid crystal and mixing liquid crystals) random lasers doped with a gain medium and CdS nanoparticles. By performing frequency doubled 532 nm Nd:YAG (yttrium aluminum garnet) laser as… read more here.
Keywords: laser; doped liquid; liquid crystal; cds nanoparticles ... See more keywords
Multiple Scattering from Electrospun Nanofibers with Embedded Silver Nanoparticles of Tunable Shape for Random Lasers and White-Light-Emitting Diodes.
Sign Up to like & getrecommendations! Published in 2019 at "ACS applied materials & interfaces"
DOI: 10.1021/acsami.9b16059
Abstract: Random lasers (RLs) are convenient, tunable, and widely applicable. However, the influence of fluorescence lifetime on the scattering and nanofiber distribution of nanofibers with various shapes of silver nanoparticles (Ag NPs) embedded within is unclear.… read more here.
Keywords: random lasers; silver nanoparticles; light emitting; white light ... See more keywords
Temporal profiles for measuring threshold of random lasers pumped by ns pulses
Sign Up to like & getrecommendations! Published in 2017 at "Scientific Reports"
DOI: 10.1038/s41598-017-05513-8
Abstract: The working threshold is an important parameter to assess the performance of cavity-free random lasers. Here, the temporal profile measurement is proposed as an alternative method to determine the thresholds of the surface plasmon based… read more here.
Keywords: measuring threshold; pumped pulses; lasers pumped; threshold random ... See more keywords
Coexistence of temperature-robust band edge lasers and random lasers for high-quality, speckle-free imaging
Sign Up to like & getrecommendations! Published in 2025 at "Applied Physics Letters"
DOI: 10.1063/5.0268949
Abstract: In this work, we demonstrate that by coupling random lasing with band edge lasing, high-quality, speckle-free imaging can be achieved even in scattering environments. Results show that band edge lasers and random lasers coexist in… read more here.
Keywords: band edge; speckle free; edge; edge lasers ... See more keywords
Demonstration of Self-Starting Nonlinear Mode Locking in Random Lasers.
Sign Up to like & getrecommendations! Published in 2021 at "Physical review letters"
DOI: 10.1103/physrevlett.126.173901
Abstract: In ultrafast multimode lasers, mode locking is implemented by means of saturable absorbers or modulators, allowing for very short pulses. This occurs because of nonlinear interactions of modes with well equispaced frequencies. Though theory predicts… read more here.
Keywords: mode locking; locking random; self starting; random lasers ... See more keywords
Manipulation of Polarized Random Lasers from Dye-Doped Twisted Nematic Liquid Crystals Within Wedge Cells
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Journal"
DOI: 10.1109/jphot.2017.2689064
Abstract: The characteristics of polarized random lasers (RLs), made from dye-doped twisted nematic liquid crystals (DD-TNLCs) in a wedge cell, have been investigated. Regardless of the multiple light scattering within disordered LCs inside the cell, the… read more here.
Keywords: nematic liquid; random lasers; doped twisted; twisted nematic ... See more keywords
Fabrication of molybdenum oxide thin films with different Kerr nonlinearities and using them in random lasers.
Sign Up to like & getrecommendations! Published in 2021 at "Applied optics"
DOI: 10.1364/ao.413664
Abstract: The development of random lasers (RLs) is attracting considerable interest. Here, we investigate how the nonlinear optical behaviors of scattering particles can affect the emission of RLs. In this regard, molybdenum oxide is synthesized by… read more here.
Keywords: oxide thin; molybdenum; molybdenum oxide; random lasers ... See more keywords
Nanoparticle-doped electrospun fiber random lasers with spatially extended light modes.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.024604
Abstract: Complex assemblies of light-emitting polymer nanofibers with molecular materials exhibiting optical gain can lead to important advance to amorphous photonics and to random laser science and devices. In disordered mats of nanofibers, multiple scattering and… read more here.
Keywords: doped electrospun; light modes; electrospun fiber; nanoparticle doped ... See more keywords
Advantages of random lasers in high-resolution speckle-free bio-imaging.
Sign Up to like & getrecommendations! Published in 2025 at "Optics express"
DOI: 10.1364/oe.572707
Abstract: Random lasers, which bridge the gap between the conventional light-emitting diodes (LEDs) and coherent laser diodes (LDs), have been proven as promising light sources to suppress speckle patterns in optical imaging. In this study, to… read more here.
Keywords: resolution speckle; bio imaging; high resolution; random lasers ... See more keywords
True random number generation based on temporal fluctuations of abalone shell coherent random lasers.
Sign Up to like & getrecommendations! Published in 2024 at "Optics letters"
DOI: 10.1364/ol.533214
Abstract: The output modes of random lasers exhibit randomness, making them a potential high-quality physical entropy source for generating random numbers. In this paper, we controlled a low-cost and easily fabricated abalone shell random laser, generating… read more here.
Keywords: coherent random; based temporal; abalone shell; random number ... See more keywords