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

页码：5751 / 5754

页数：4

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

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