Results 31 to 40 of about 1,414,761 (230)

Development Progress of 3–5 μm Mid-Infrared Lasers: OPO, Solid-State and Fiber Laser

Applied Sciences, 2021
A 3–5 μm mid-infrared band is a good window for atmospheric transmission. It has the advantages of high contrast and strong penetration under high humidity conditions. Therefore, it has important applications in the fields of laser medicine, laser radar,
Tingwei Ren, Chunting Wu, Yongji Yu, T. Dai, Fei Chen, Q. Pan   +5 more
semanticscholar   +1 more source

Study on Mid-Infrared Energy Conversion of a Doubly Resonant Optical Parametric Oscillator Using Aperiodically Poled Lithium Niobate

Applied Sciences, 2022
This paper presents an external-cavity dual-wavelength mid-infrared multiple optical parametric oscillator based on a single MgO:APLN crystal, which is pumped by a pulsed 1.064 μm laser.
Zijian Wang, Bingyang Li, Yuheng Wang, Renzhe Han, Yaru Yang, Yongji Yu, Guangyong Jin   +6 more
doaj   +1 more source

13.5 μJ, 20 kHz Repetition Rate, Single Frequency Pr³⁺:YLF Master Oscillator Power Amplifier System

Photonics, 2023
This article describes a master oscillator and power amplifier (MOPA) system with a single longitudinal mode (SLM) and high-repetition-frequency Pr3+:YLF active medium that was end-pumped by two 444 nm laser diodes.
Weicheng Dai, Long Jin, Chang Liu, Yuan Dong, Guangyong Jin   +4 more
doaj   +1 more source

Effect of carrier confinement on effective mass of excitons and estimation of ultralow disorder in Al x Ga1−x As/GaAs quantum wells by magneto-photoluminescence

Scientific Reports, 2017
Effect of charge carrier confinement and ultra-low disorder acquainted in AlGaAs/GaAs multi-quantum well system is investigated via Magneto-photoluminescence spectroscopy.
S. Haldar, V. K. Dixit, Geetanjali Vashisht, Shailesh Kumar Khamari, S. Porwal, T. K. Sharma, S. M. Oak   +6 more
doaj   +1 more source

Laser-induced ignition of methane-air mixtures by a four-beam, pulse-burst mode passively Q-switched Nd:YAG/Cr4+:YAG laser

Results in Physics, 2022
In this work we report on the characteristics of laser ignition of CH4-air mixtures, using multi-point (up to four points) ignition with single-pulse beams as well as with trains of two pulses.
Ciprian Dumitrache, Nicolae-Tiberius Vasile, Gabriela Croitoru, Nicolaie Pavel   +3 more
doaj   +1 more source

High-Power High Beam Quality Narrow-Linewidth Quasicontinuous Wave Microsecond Pulse 1064-nm Nd:YAG Amplifier

IEEE Photonics Journal, 2016
We demonstrated a high average power, high beam quality, narrow linewidth, quasicontinuous wave (QCW) diode-pumped 1064-nm Nd:YAG amplifier. A narrow-linewidth QCW pulse Nd:YAG oscillator was employed as the seed laser, providing a maximum average power ...
Chuan Guo, Qi Bian, Chang Xu, Junwei Zuo, Yong Bo, Zhimin Wang, Yu Shen, Nan Zong, Hongwei Gao, Yang Liu, Dafu Cui, Qinjun Peng, Zuyan Xu   +12 more
doaj   +1 more source

A Stable and Compact Mid-IR at 6.45 μm Exceeding 6 mJ of Pulse Energy BaGa₄Se₇ Optical Parametric Oscillator

Applied Sciences, 2023
We experimentally demonstrate a stable and compact high pulse energy mid-infrared (MIR) 6.45 μm laser, which is produced by an optical parametric oscillator (OPO) based on the non-oxide BaGa4Se7 (BGSe) nonlinear crystal pumped by 1064 nm Nd:YAG laser ...
Ning Wen, Yu Shen, Ya Wen, Erpeng Wang, Jiyong Yao, You Fang, Hongwei Gao, Yong Bo, Zhongzheng Chen, Qinjun Peng   +9 more
doaj   +1 more source

Theoretical and Experimental Investigation on Temperature Rise of CFRP with Long Pulse Laser Irradiation

Applied Sciences, 2021
Carbon fiber reinforced polymers (CFRP) are a widely used composite material applied in both commercial and industrial utilization. Based on the heat conduction theory, a theoretical model for the temperature rise of braided CFRP irradiated by long pulse
Yao Ma, Qiang Huang, Yixin Yu, Yuan Dong, Hui Li, Guangyong Jin, Chao Xin   +6 more
doaj   +1 more source

Simulation and Experimental Study of Nanosecond Pulse Laser Removal of Epoxy Paint on 6061 Aluminum Alloy Surface

Photonics, 2023
Laser paint removal is a new cleaning technology that mainly removes paint through thermal ablation and mechanical stripping mechanisms. This paper established a thermal-mechanical coupling laser removal model of paint based on the heat conduction ...
Yahui Li, Jingyi Li, Hang Dong, Wei Zhang, Guangyong Jin   +4 more
doaj   +1 more source

1.4 W Passively Q-Switched Mode-Locked Tm:CALGO Laser with a MoS₂ Saturable Absorber

Photonics
The passively Q-switched mode-locked (QML) operation of a Tm:CaGdAlO4 (Tm:CALGO) bulk laser pumped by a wavelength-tunable Ti:sapphire oscillator using molybdenum disulfide (MoS2) as a saturable absorber was demonstrated.
Weijun Ling, Hao Xu, Jinfang Yang, Xue Qiu, Taotao He, Purui An, Chao Bi, Shichao Yuan, Man Wang, Xinye Tian, Zhong Dong   +10 more
doaj   +1 more source