Two Schemes for Generating Efficient Terahertz Waves in Nonlinear Optical Crystals with a Mid-Infrared CO2 Laser
RAO Zhi-Ming1,2, WANG Xin-Bing1**, LU Yan-Zhao1, ZUO Du-Luo1, WU Tao1
1 Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074 2 Department of Computer Science, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004
Two Schemes for Generating Efficient Terahertz Waves in Nonlinear Optical Crystals with a Mid-Infrared CO2 Laser
RAO Zhi-Ming1,2, WANG Xin-Bing1**, LU Yan-Zhao1, ZUO Du-Luo1, WU Tao1
1 Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074 2 Department of Computer Science, Jiangxi University of Traditional Chinese Medicine, Nanchang 330004
摘要Terahertz wave generation is explored on the basis of difference frequency generation in nonlinear optical crystals with a mid-infrared CO2 laser. The phase−matching angle and the grating period of periodically inverted GaAs in the 100–1000 µm (0.3–3 THz) range are also investigated on the basis of the surface-emitted difference frequency generation. It is found that two schemes of phase-matching-applied collinear phase matching and phase-matching-applied non-collinear phase matching are efficient to obtain THz waves.
Abstract：Terahertz wave generation is explored on the basis of difference frequency generation in nonlinear optical crystals with a mid-infrared CO2 laser. The phase−matching angle and the grating period of periodically inverted GaAs in the 100–1000 µm (0.3–3 THz) range are also investigated on the basis of the surface-emitted difference frequency generation. It is found that two schemes of phase-matching-applied collinear phase matching and phase-matching-applied non-collinear phase matching are efficient to obtain THz waves.
(Gas lasers including excimer and metal-vapor lasers)
引用本文:
RAO Zhi-Ming;WANG Xin-Bing**;LU Yan-Zhao;ZUO Du-Luo;WU Tao
. Two Schemes for Generating Efficient Terahertz Waves in Nonlinear Optical Crystals with a Mid-Infrared CO2 Laser[J]. 中国物理快报, 2011, 28(7): 74215-074215.
RAO Zhi-Ming, WANG Xin-Bing**, LU Yan-Zhao, ZUO Du-Luo, WU Tao
. Two Schemes for Generating Efficient Terahertz Waves in Nonlinear Optical Crystals with a Mid-Infrared CO2 Laser. Chin. Phys. Lett., 2011, 28(7): 74215-074215.
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