LED-side-pumped Nd:YAG laser with >20% optical efficiency and the demonstration of an efficient passively Q-switched LED-pumped solid-state laser

被引：24
|
作者：
Cho, Chun Yu [1 ]
Pu, Chi Chih [1 ]
Su, Kuan Wei [1 ]
Chen, Yung Fu [1 ]
机构：
[1] Natl Chiao Tung Univ, Dept Electrophys, 1001 Ta Hsueh Rd, Hsinchu, Taiwan
来源：
OPTICS LETTERS | 2017年 / 42卷 / 12期
关键词：
YAG LASER; ND; TEMPERATURE; CRYSTAL; FIBER;
D O I：
10.1364/OL.42.002394
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A LED-array-pumped Nd:YAG laser with optical conversion efficiency up to 20.2% is demonstrated by direct side-pumping without a coupling lens. The 810-nm LED array with a full-width-half-maximum of 30 nm and an area fill factor of 50% is designed to attain high spectral absorption efficiency with a pump density of 151.8 W/cm(2). Furthermore, higher than 45% overall coupling efficiency is achieved by placing the LED array as close as possible to the side of the gain medium for overcoming the large pumped divergence. More importantly, by using the efficient pump scheme, the demonstration of a passively Q-switched LED-pumped laser is successfully realized with a pulsed energy of 1.42 mJ. (C) 2017 Optical Society of America
引用
收藏
页码：2394 / 2397
页数：4
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