450 W pulsed laser system with M2 < 1.2 based on a 969-nm laser diode end-pumped Yb:YAG rod amplifier

被引：6
|
作者：
Wang, Chunhua [1 ,2 ]
Khurgin, Jacob B. [3 ]
Yu, Huakang [2 ]
机构：
[1] Dongguan Univ Technol, Sch Elect Engn & Intelligentizat, Dongguan 523808, Peoples R China
[2] South China Univ Technol, Sch Phys & Optoelect, Guangzhou 510641, Peoples R China
[3] Johns Hopkins Univ, Dept Elect & Comp Engn, Baltimore, MD 21218 USA
来源：
OPTICS LETTERS | 2023年 / 48卷 / 21期
基金：
中国国家自然科学基金;
关键词：
POWER;
D O I：
10.1364/OL.505919
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrated a compact and power-efficient multi-stage pulsed end-pumped amplifier with stabilized output power of 450 W and near-diffraction-limited beam quality (M-2 < 1.2) at a repetition rate of 1 MHz. The pulsed amplifier produced an exceptional average power and optimal beam quality achieved in laser diode (LD) end-pumped Yb:YAG thin rod configuration at room temperature. A preliminary pulse compression with a chirped volume Bragg grating (CVBG) was performed reducing pulse duration to similar to 730 fs at a compression efficiency of 90%. With the combined features, including compactness, reliability, and efficiency, of the end-pumped scheme, the demonstrated laser system would be of great value in both industry and scientific research. (c) 2023 Optica Publishing Group
引用
收藏
页码：5751 / 5754
页数：4
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