Results 41 to 50 of about 527,555 (282)

Robust speckle-free imaging using random lasers enhanced by TiN nanoparticles in complex scattering environments

Nanophotonics, 2023
A light source with narrowband, sufficient brightness, and low spatial coherence is required for certain applications such as optical imaging and free-space optical communication.
Wan Yuan, Li Zhihao, Liu Zexu, Yang Yang, Wang Hongzhen, Liu Xianlong, Cai Yangjian   +6 more
doaj   +1 more source

Triple-Wavelength Thulium-Doped Fiber Random Laser Based on Random Fiber Grating

Photonics, 2023
We demonstrate a triple-wavelength thulium-doped fiber random laser using a 10 cm long random fiber grating to provide random distributed feedback and a superimposed fiber Bragg grating as the wavelength-selective mirror.
Lewen Zhou, Yaozong Hu, Wenlong Zheng, Pengbai Xu, Zhensen Gao, Xinyong Dong   +5 more
doaj   +1 more source

The Origin of Threshold Reduction in Random Lasers Based on MoS₂/Au NPs: Charge Transfer

Photonics
Random lasers have attracted much attention in recent years owing to their advantages of a simple fabrication process, low processing cost, and material flexibility for any lasing wavelengths.
Yanyan Huo, Ke Sun, Yuqian Zhang, Weihao Liu, Junkun Wang, Yuan Wan, Lina Zhao, Tingyin Ning, Zhen Li, Yingying Ren   +9 more
doaj   +1 more source

ZnO nanorod array random lasers fabricated by a laser-induced hydrothermal synthesis

New Journal of Physics, 2016
We demonstrate random lasing in ZnO nanorod array (NRA) structures fabricated by a laser-induced hydrothermal growth, which would make it possible to control structural parameters, such as diameter, length, density and so on, by adjusting the laser ...
Hideki Fujiwara, Takemasa Suzuki, Ryo Niyuki, Keiji Sasaki   +3 more
doaj   +1 more source

Broadband plasmonic silver nanoflowers for high-performance random lasing covering visible region

Nanophotonics, 2017
Multicolor random lasing has broad potential applications in the fields of imaging, sensing, and optoelectronics. Here, silver nanoflowers (Ag NF) with abundant nanogaps are fabricated by a rapid one-step solution-phase synthesis method and are first ...
Chang Qing, Shi Xiaoyu, Liu Xuan, Tong Junhua, Liu Dahe, Wang Zhaona   +5 more
doaj   +1 more source

Perovskite random lasers on fiber facet

Nanophotonics, 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, Yan Shaoxin, Tong Junhua, Shi Xiaoyu, Zhang Shuai, Chen Chao, Xiao YueYue, Han Changbao, Zhai Tianrui   +8 more
doaj   +1 more source

Spectrum-tailored random fiber laser towards ICF laser facility

Matter and Radiation at Extremes, 2023
Broadband low-coherence light is considered to be an effective way to suppress laser plasma instability. Recent studies have demonstrated the ability of low-coherence laser facilities to reduce back-scattering during beam–target coupling.
Mengqiu Fan, Shengtao Lin, Ke Yao, Yifei Qi, Jiaojiao Zhang, Junwen Zheng, Pan Wang, Longqun Ni, Xingyu Bao, Dandan Zhou, Bo Zhang, Kaibo Xiao, Handing Xia, Rui Zhang, Ping Li, Wanguo Zheng, Zinan Wang   +16 more
doaj   +1 more source

Probability of Reflection by a Random Laser [PDF]

, 1996
A theory is presented (and supported by numerical simulations) for phase-coherent reflection of light by a disordered medium which either absorbs or amplifies radiation.
Beenakker, C. W. J., Brouwer, P. W., Paasschens, J. C. J.   +2 more
core   +3 more sources

The controllable intensity and polarization degree of random laser from sheared dye-doped polymer-dispersed liquid crystal

Nanophotonics, 2017
The random laser from sheared dye-doped polymer-dispersed liquid crystal (DDPDLC) is investigated. As the emission intensity weakens, the threshold of random laser from DDPDLC increases from 2.0 mJ/pulse to 4.0 mJ/pulse, and the degree of polarization ...
Ye Lihua, Li Fangjie, Lu Changgui, Cheng Zhixiang, Hu Guohua, Lu Yanqing, Cui Yiping   +6 more
doaj   +1 more source

Adaptive pumping for spectral control of random lasers

, 2013
A laser is not necessarily a sophisticated device: Pumping energy into an amplifying medium randomly filled with scatterers, a powder for instance, makes a perfect "random laser." In such a laser, the absence of mirrors greatly simplifies laser design ...
Bachelard, N., Gigan, S., Noblin, X., Sebbah, P.   +3 more
core   +3 more sources