| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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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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| Cite this article: |
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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%.
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| Keywords:
42.65.Yj
42.65.Ky
42.70.Mp
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Received: 08 October 2008
Published: 20 January 2009
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| PACS: |
42.65.Yj
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(Optical parametric oscillators and amplifiers)
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42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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42.70.Mp
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(Nonlinear optical crystals)
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