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Compact and tunable mid-infrared source based on a 2 μm dual-wavelength KTiOPO4 intracavity optical parametric oscillator |
Geng You-Fu(耿优福)a)c), Tan Xiao-Ling(谭晓玲)b), Li Xue-Jin(李学金)a)†, and Yao Jian-Quan(姚建铨)c) |
a College of Physics Science and Technology, Shenzhen Key Laboratory of Sensor Technology, Shenzhen University, Shenzhen 518060, China; b Faculty of Science, Ningbo University, Ningbo 315211, China; c College of Precision Instrument and Optoelectronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, China |
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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.
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Received: 31 March 2010
Revised: 20 May 2010
Accepted manuscript online:
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PACS:
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42.60.Da
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(Resonators, cavities, amplifiers, arrays, and rings)
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42.60.Fc
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(Modulation, tuning, and mode locking)
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42.65.Yj
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(Optical parametric oscillators and amplifiers)
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42.70.Mp
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(Nonlinear optical crystals)
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42.72.Ai
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(Infrared sources)
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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). |
Cite this article:
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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