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Comparative investigation of long-wave infrared generation based on ZnGeP2 and CdSe optical parametric oscillators |
Yao Bao-Quan(姚宝权)†, Li Gang(李纲), Zhu Guo-Li(朱国利), Meng Pei-Bei(蒙裴贝), Ju You-Lun(鞠有伦), and Wang Yue-Zhu(王月珠) |
National Key Laboratory of Tunable Laser Technology, Harbin Institute of Technology, Harbin 150001, China |
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Abstract Long-wave infrared (IR) generation based on type-II (o→e+o) phase matching ZnGeP2 (ZGP) and CdSe optical parametric oscillators (OPOs) pumped by a 2.05 μm Tm,Ho:GdVO4 laser is reported. The comparisons of the birefringent walk-off effect and the oscillation threshold between ZGP and CdSe OPOs are performed theoretically and experimentally. For the ZGP OPO, up to 419 mW output at 8.04 μm is obtained at the 8 kHz pump pulse repetition frequency (PRF) with a slope efficiency of 7.6%. This ZGP OPO can be continuously tuned from 7.8 to 8.5 μm. For the CdSe OPO, we demonstrate a 64 mW output at 8.9 μm with a single crystal 28 mm in length.
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Received: 17 October 2010
Revised: 10 September 2011
Accepted manuscript online:
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PACS:
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42.65.Yj
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(Optical parametric oscillators and amplifiers)
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42.70.Nq
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(Other nonlinear optical materials; photorefractive and semiconductor materials)
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42.65.Lm
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(Parametric down conversion and production of entangled photons)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 60878011 and 61078008) and the Program for New Century Excellent Talents in University, China (Grant No. NCET-10-0067). |
Corresponding Authors:
Yao Bao-Quan,yaobq08@hit.edu.cn
E-mail: yaobq08@hit.edu.cn
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Cite this article:
Yao Bao-Quan(姚宝权), Li Gang(李纲), Zhu Guo-Li(朱国利), Meng Pei-Bei(蒙裴贝), Ju You-Lun(鞠有伦), and Wang Yue-Zhu(王月珠) Comparative investigation of long-wave infrared generation based on ZnGeP2 and CdSe optical parametric oscillators 2012 Chin. Phys. B 21 034213
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