Compact and tunable mid-infrared source based on a 2 μm dual-wavelength KTiOPO4 intracavity optical parametric oscillator

doi:10.1088/1674-1056/19/11/114209

Abstract Using a double resonant KTiOPO₄ (KTP) intracavity optical parametric oscillator operating at degenerated point of 2 μm, we demonstrate a unique mid-infrared source based on difference frequency generation in GaSe crystal. The output tuning range is 8.42-19.52 μm, and a peak power of 834 W for type-I phase matching scheme and 730 W for type-II phase matching scheme are achieved. Experimental results show that this oscillator is a good alternative to the generator of a compact and tabletop mid-infrared radiation with a widely tunable range.

Keywords: mid-infrared radiation difference frequency generation optical parametric oscillator phase matching scheme

Received: 31 March 2010
Revised: 20 May 2010
Accepted manuscript online:

PACS:	42.60.Da	(Resonators, cavities, amplifiers, arrays, and rings)
	42.60.Fc	(Modulation, tuning, and mode locking)
	42.65.Yj	(Optical parametric oscillators and amplifiers)
	42.70.Mp	(Nonlinear optical crystals)
	42.72.Ai	(Infrared sources)

Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 60777036 and 60671036), and the National Basic Research Program of China (Grant No. 2007CB310403).

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Geng You-Fu(耿优福), Tan Xiao-Ling(谭晓玲), Li Xue-Jin(李学金), and Yao Jian-Quan(姚建铨) Compact and tunable mid-infrared source based on a 2 μm dual-wavelength KTiOPO₄ intracavity optical parametric oscillator 2010 Chin. Phys. B 19 114209

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Compact and tunable mid-infrared source based on a 2 μm dual-wavelength KTiOPO4 intracavity optical parametric oscillator

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Compact and tunable mid-infrared source based on a 2 μm dual-wavelength KTiOPO₄ intracavity optical parametric oscillator