Terahertz Generation in Nonlinear Crystals with Mid-Infrared CO2 Laser
LU Yan-Zhao, WANG Xin-Bing**, MIAO Liang, ZUO Du-Luo, CHENG Zu-Hai
Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074
Terahertz Generation in Nonlinear Crystals with Mid-Infrared CO2 Laser
LU Yan-Zhao, WANG Xin-Bing**, MIAO Liang, ZUO Du-Luo, CHENG Zu-Hai
Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074
摘要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.
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.
[1] Schmuttenmaer C A 2004 Chem. Rev. 104 1759
[2] Ferguson B and Zhang X C 2002 Nature Mater. 1 26
[3] Siegel P H 2002 IEEE Trans. Microwave Theor. Technol. 50 910
[4] Shi W, Ding Y J, Fernelius N and Vodopyanov K 2002 Opt. Lett. 27 1454
[5] Shi W and Ding Y J 2003 Appl. Phys. Lett. 83 848
[6] Shi W and Ding Y J 2005 Opt. Lett. 30 1030
[7] Tanabe T et al 2003 Appl. Phys. Lett. 83 237
[8] Stothard D et al 2008 Appl. Phys. Lett. 92 141105
[9] Aggarwal R L, Lax B and Favrot G 1973 Appl. Phys. Lett. 22 329
[10] Kawase K et al 2000 Opt. Lett. 25 1714
[11] Tochitsky S Y et al 2007 J. Opt. Soc. Am. B 24 2509
[12] Tochitsky S Y et al 2005 J. Appl. Phys. 98 26101
[13] Jiang Y and Ding Y J 2007 Appl. Phys. Lett. 91 91108
[14] Lu Y Z et al 2010 Appl. Phys. B: Lasers Opt. (Published online)
[15] Allakhverdiev K et al 2009 Laser Physics 19 1092
[16] Ding Y J and Shi W 2003 J. Nonlin. Opt. Phys. Mater. 12 557
[17] Dmitriev V G, Gurzadyan G G and Nikogosyan D N 1999 Handbook of Nonlinear Optical Crystals (Berlin: Springer) pp 50 141 169
[18] Vodopyanov K L and Kulevskii L A 1995 Opt. Commun. 118 375
[19] Boyd G D et al 1972 Appl. Phys. Lett. 21 553
[20] Apollonov V V et al 1996 IEEE J. Quantum Electron. 26 469
[21] Nikogosyan D N 2005 Nonlinear Optical Crystals: A Complete Survey (New York: Springer) p 208
[22] Johnson C J, Sherman G H and Weil R 1969 Appl. Opt. 8 1667
[23] Skauli T et al 2003 J. Appl. Phys. 94 6447
[24] Herman G S, Barnes N P and Peyghambarian N 1999 Proc. of SPIE 3617 112
[25] Vodopyanov K L et al 2006 Appl. Phys. Lett. 89 141119
[26] Jiang Y, Ding Y J and Zotova I B 2008 Appl. Phys. Lett. 93 241102
2011, Vol. 28 
