標題: LED-side-pumped Nd:YAG laser with > 20% optical efficiency and the demonstration of an efficient passively Q-switched LED-pumped solid-state laser
作者: Cho, Chun Yu
Pu, Chi Chih
Su, Kuan Wei
Chen, Yung Fu
電子物理學系
Department of Electrophysics
公開日期: 15-Jun-2017
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
URI: http://dx.doi.org/10.1364/OL.42.002394
http://hdl.handle.net/11536/145651
ISSN: 0146-9592
DOI: 10.1364/OL.42.002394
期刊: OPTICS LETTERS
Volume: 42
起始頁: 2394
結束頁: 2397
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