A 18-W Signal Average Power Nanosecond LiB<suB>3</suB>O<suB>5</suB> Optical Parametric Oscillator around 860nm and the Beam Quality

Chin. Phys. Lett.

2005, Vol. 22

Issue (7): 1694-1697 DOI:

Original Articles

A 18-W Signal Average Power Nanosecond LiB₃O₅ Optical Parametric Oscillator around 860nm and the Beam Quality

LI Hui-Qing^1,2;GENG Ai-Cong^1,2;BO Yong¹;PENG Qin-Jun^1,2;CUI Da-Fu¹;XU Zu-Yan¹

¹Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100080 ²Graduate School of the Chinese Academy of Sciences, Beijing 100080

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LI Hui-Qing, GENG Ai-Cong, BO Yong et al 2005 Chin. Phys. Lett. 22 1694-1697

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Abstract We report a compact high average power optical parametric oscillator (OPO) pumped by an all-solid-state nanosecond 532-nm laser. Based on the merit of non-critically phase-matched crystals without walk-off effect, a 60-mm-long LiB₃O₅ (LBO) crystal is used as the OPO nonlinear crystal to enhance the conversion efficiency and to increase the output power. The maximum average power of signal output is up to 18W at 860nm for pump power of 65W. This is the highest signal average power generated by a nanosecond OPO in single bulk LBO, to the best of our knowledge. The dynamic characteristics of beam quality are investigated. Our experimental results demonstrate that good OPO conversion efficiency and high output power can be obtained even with relatively poor pump beam quality.

Keywords: 42.65.Yj 42.70.Mp 42.65.Hw

Published: 01 July 2005

PACS:	42.65.Yj	(Optical parametric oscillators and amplifiers)
	42.70.Mp	(Nonlinear optical crystals)
	42.65.Hw	(Phase conjugation; photorefractive and Kerr effects)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2005/V22/I7/01694

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	LI Hui-Qing
	GENG Ai-Cong
	BO Yong
	PENG Qin-Jun
	CUI Da-Fu
	XU Zu-Yan

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