Low-threshold, high-efficiency, high-repetition-rate optical parametric generator based on periodically poled LiNbO3

doi:10.1088/1009-1963/13/3/018

Abstract

Abstract We report a high-repetition-rate optical parametric generator (OPG) with a periodically poled lithium niobate (PPLN) crystal pumped by an acousto-optically Q-switched CW-diode-end-pumped Nd:YVO_4 laser. For the maximum 1064nm pump power of 970mW, the maximum conversion efficiency is 32.9% under the conditions of 250℃, 1064nm pulse repetition rate of 22.6kHz and pulse width of 12ns, and the PPLN OPG threshold in the collinear case is less than 23.7μJ. The output power increases with the increase of the crystal temperature. The 1485－1553nm signal wave and 3383－3754nm idler wave are obtained by changing the temperature and the angle of the PPLN crystal.

Keywords: quasi-phase-matching periodically poled lithium niobate optical parametric generator

Received: 28 August 2003
Revised: 15 October 2003
Accepted manuscript online:

PACS:	42.65.Lm	(Parametric down conversion and production of entangled photons)
	42.65.Yj	(Optical parametric oscillators and amplifiers)
	42.70.Mp	(Nonlinear optical crystals)
	42.55.Rz	(Doped-insulator lasers and other solid state lasers)
	42.60.By	(Design of specific laser systems)
	42.60.Gd	(Q-switching)
	42.60.Jf	(Beam characteristics: profile, intensity, and power; spatial pattern formation)

Fund: Project supported by the National Natural Science Foundation of China (Grant No 60278001), the Science and Technology Cooperation Foundation of Nankai University and Tianjin University, the Ministry of Education; the Doctoral Program Foundation of Ministr

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Zhang Bai-Gang (张百钢), Yao Jian-Quan (姚建铨), Ding Xin (丁欣), Zhang Hao (张浩), Wang Peng (王鹏), Xu De-Gang (徐德刚), Yu Guo-Jun (禹国俊), Zhang Fan (张帆) Low-threshold, high-efficiency, high-repetition-rate optical parametric generator based on periodically poled LiNbO₃ 2004 Chinese Physics 13 364

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Low-threshold, high-efficiency, high-repetition-rate optical parametric generator based on periodically poled LiNbO3

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Low-threshold, high-efficiency, high-repetition-rate optical parametric generator based on periodically poled LiNbO₃