Results 11 to 20 of about 18,085 (258)

Potential of Sub-THz-Wave Generation in Li₂B₄O₇ Nonlinear Crystal at Room and Cryogenic Temperatures

Crystals, 2021
Due to their high optical damage threshold, borate crystals can be used for the efficient nonlinear down-conversion of terawatt laser radiation into the terahertz (THz) frequency range of the electromagnetic spectrum.
Dmitry Ezhov, Snezhana Turgeneva, Nazar Nikolaev, Alexander Mamrashev, Sergei Mikerin, Fedor Minakov, Andrey Simanchuk, Valery Antsygin, Valery Svetlichnyi, Valery Losev, Yury Andreev   +10 more
doaj   +1 more source

GAS-DISCHARGE LASERS OF THE TERAHERTZ RANGE [PDF]

Радиофизика и электроника, 2017
The terahertz (THz) frequency range now attracts much attention of researchers and consumers in connection with many possibilities of using it for solving a number of practical problems in science, technology and medicine.
M. I. Dzyubenko, Y. E. Kamenev, V. P. Radionov   +2 more
doaj   +1 more source

The second fusion of laser and aerospace—an inspiration for high energy lasers

Opto-Electronic Advances, 2023
Since the first laser was invented, the pursuit of high-energy lasers (HELs) has always been enthusiastic. The first revolution of HELs was pushed by the fusion of laser and aerospace in the 1960s, with the chemical rocket engines giving fresh impetus to
Xiaojun Xu, Rui Wang, Zining Yang
doaj   +1 more source

All-Fiber Gas Cavity Based on Anti-Resonant Hollow-Core Fibers Fabricated by Splicing with End Caps

Photonics, 2021
In recent years, fiber gas lasers have obtained a rapid development, however, efficient and stable pump coupling is a key limitation for their applications in the future.
Jing Shi, Xinyu Ye, Yulong Cui, Wei Huang, Hao Li, Zhiyue Zhou, Meng Wang, Zilun Chen, Zefeng Wang   +8 more
doaj   +1 more source

Generation of isolated soft x-ray attosecond pulses with mid-infrared driving lasers via transient phase-matching gating

New Journal of Physics, 2021
Isolated attosecond pulses (IAPs) in the soft x-ray (SXR) region are highly desirable for attosecond time-resolved experiments. Here we identify a transient phase matching gating method for the generation of such IAPs with mid-infrared (MIR) lasers. This
Baochang Li, Kan Wang, Xiangyu Tang, Yanbo Chen, C D Lin, Cheng Jin   +5 more
doaj   +1 more source

All-Fiber Gas Raman Laser by D₂-Filled Hollow-Core Photonic Crystal Fibers

Photonics, 2021
We report here an all-fiber structure tunable gas Raman laser based on deuterium-filled hollow-core photonic crystal fibers (HC-PCFs). An all-fiber gas cavity is fabricated by fusion splicing a 49 m high-pressure deuterium-filled HC-PCF with two solid ...
Wenxi Pei, Hao Li, Wei Huang, Meng Wang, Zefeng Wang   +4 more
doaj   +1 more source

Narrow-Linewidth 2 μm All-Fiber Laser Amplifier with a Highly Stable and Precisely Tunable Wavelength for Gas Molecule Absorption in Photonic Crystal Hollow-Core Fibers

Molecules, 2021
In recent years, mid-infrared fiber lasers based on gas-filled photonic crystal hollow-core fibers (HCFs) have attracted enormous attention. They provide a potential method for the generation of high-power mid-infrared emissions, particularly beyond 4 μm.
Wenxi Pei, Hao Li, Yulong Cui, Zhiyue Zhou, Meng Wang, Zefeng Wang   +5 more
doaj   +1 more source

Coherent power scaling in photonic crystal surface emitting laser arrays

AIP Advances, 2021
A key benefit of photonic crystal surface emitting lasers (PCSELs) is the ability to increase output power through scaling the emission area while maintaining high quality single mode emission, allowing them to close the brightness gap which exists ...
Ben C. King, Katherine J. Rae, Adam F. McKenzie, Aleksandr Boldin, Daehyun Kim, Neil D. Gerrard, Guangrui Li, Kenichi Nishi, Keizo Takemasa, Mitsuru Sugawara, Richard J. E. Taylor, David T. D. Childs, Richard A. Hogg   +12 more
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Quartz‐Enhanced Photoacoustic Sensors for Detection of Eight Air Pollutants

Advanced Photonics Research, 2023
A quartz‐enhanced photoacoustic spectroscopy sensor architecture capable of detecting eight different air pollutants (CH4, NO2, CO2, N2O, CO, NO, SO2, and NH3) is reported.
Raffaele De Palo, Arianna Elefante, Gabriele Biagi, Francesco Paciolla, Robert Weih, Valeria Villada, Andrea Zifarelli, Marilena Giglio, Angelo Sampaolo, Vincenzo Spagnolo, Pietro Patimisco   +10 more
doaj   +1 more source

All-Fiber Tunable Pulsed 1.7 μm Fiber Lasers Based on Stimulated Raman Scattering of Hydrogen Molecules in Hollow-Core Fibers

Molecules, 2021
Fiber lasers that operate at 1.7 μm have important applications in many fields, such as biological imaging, medical treatment, etc. Fiber gas Raman lasers (FGRLs) based on gas stimulated Raman scattering (SRS) in hollow-core photonic crystal fibers (HC ...
Wenxi Pei, Hao Li, Wei Huang, Meng Wang, Zefeng Wang   +4 more
doaj   +1 more source