| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Terahertz Generation in Nonlinear Crystals with Mid-Infrared CO2 Laser |
| LU Yan-Zhao, WANG Xin-Bing**, MIAO Liang, ZUO Du-Luo, CHENG Zu-Hai
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Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074
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LU Yan-Zhao, WANG Xin-Bing, MIAO Liang et al 2011 Chin. Phys. Lett. 28 034201 |
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Abstract The terahertz (THz) generation based on difference frequency generation in nonlinear optical crystals pumped by mid-infrared CO2 laser has been investigated. We present a comprehensive study of the phase-matching conditions in the GaSe, ZnGeP2 and GaAs crystals. A comparison of the characteristics of these crystals as the THz frequency generator is also presented. The investigation of the conversion efficiency shows that GaSe and GaAs are the most promising nonlinear crystals for the efficient and widely tunable THz generation.
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| Keywords:
42.65.Ky
42.79.Nv
42.55.Lt
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Received: 14 October 2010
Published: 28 February 2011
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| PACS: |
42.65.Ky
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(Frequency conversion; harmonic generation, including higher-order harmonic generation)
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42.79.Nv
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(Optical frequency converters)
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42.55.Lt
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(Gas lasers including excimer and metal-vapor lasers)
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