Hundred-watt green picosecond laser based on LBO frequency-doubled photonic crystal fiber amplifier

被引：6

作者：

Chen H. ^{[1
,2
]}

Bai Z. ^{[1
,2
]}

Wang J. ^{[3
]}

Zhang B. ^{[3
]}

Bai Z. ^{[1
,2
]}

机构：

[1] Center for Advanced Laser Technology, Hebei University of Technology, Tianjin

[2] Hebei Key Laboratory of Advanced Laser Technology and Equipment, Tianjin

[3] Shandong Key Laboratory of Optical Communication Science and Technology, School of Physicsc Science and Information Technology, Liaocheng University, Liaocheng, Liaocheng

[4] Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing

[5] Beijing GK Laser Technology Co., Ltd., Beijing

来源：

Hongwai yu Jiguang Gongcheng/Infrared and Laser Engineering | 2021年 / 50卷 / 11期

关键词：

Grating; Photonic crystal fiber; Picosecond amplifier; Pulse stretching; Second harmonic generation;

D O I：

10.3788/IRLA20200522

中图分类号：

学科分类号：

摘要：

Picosecond pulse laser with high average power is critical to applications such as industry processing, space exploration, etc. However, due to the narrow pulse width and low single pulse energy, the mode-locked picosecond seed light is difficult to be amplified directly through the traditional traveling-wave amplification, which limits the nonlinear frequency conversion efficiency. Here, by using grating chirped-pulse stretcher and slit, seed light pulses with a pulse duration of 7 ps and a central wavelength of 1030 nm at the repetition rate of 52 MHz were stretched to 32 ps with the spectral width of 1.1 nm. Then the average power was amplified to 190 W by using two air-clad photonic crystal fiber amplifiers (PCFAs). Finally, via a temperature phase-matched LiB3O5 crystal, output power up to 103.1 W was obtained with the beam quality factor 1.17 and the second harmonic conversion efficiency of 54.3%. © 2021, Editorial Board of Journal of Infrared and Laser Engineering. All right reserved.

引用

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