Chin. Phys. Lett.  2009, Vol. 26 Issue (2): 024209    DOI: 10.1088/0256-307X/26/2/024209
FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
A ZnGeP2 Optical Parametric Oscillator with Mid-IR Output Power 3W Pumped by a Tm,Ho:GdVO4 Laser
YAO Bao-Quan, ZHU Guo-Li, JU You-Lun, WANG Yue-Zhu
National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150080
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YAO Bao-Quan, ZHU Guo-Li, JU You-Lun et al  2009 Chin. Phys. Lett. 26 024209
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Abstract

We report an efficient mid-infrared optical parametric oscillator (OPO) pumped by a pulsed Tm,Ho-codoped GdVO4 laser. The 10-W Tm,Ho:GdVO4 laser pumped by a 801nm diode produces 20ns pulses with a repetition rate of 10kHz at wavelength of 2.048μm. The ZnGeP2 (ZGP) OPO produces 15-ns pulses in the spectral regions 3.65-3.8μm and 4.45-4.65μm simultaneously. More than 3W of mid-IR output power can be generated with a total OPO slope efficiency greater than 58% corresponding to incident 2μm pump power. The diode laser pump to mid-IR optical conversion efficiency is about 12%.

Keywords: 42.65.Yj      42.65.Ky      42.70.Mp     
Received: 08 October 2008      Published: 20 January 2009
PACS:  42.65.Yj (Optical parametric oscillators and amplifiers)  
  42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)  
  42.70.Mp (Nonlinear optical crystals)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/26/2/024209       OR      https://cpl.iphy.ac.cn/Y2009/V26/I2/024209
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YAO Bao-Quan
ZHU Guo-Li
JU You-Lun
WANG Yue-Zhu
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