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Chin. Phys., 2004, Vol. 13(9): 1468-1473    DOI: 10.1088/1009-1963/13/9/019
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Optical properties and frequency conversion with AgGaGeS_4 crystal

Andreev Yuria, Geiko Pavela, Shaiduko Annaa, Ren De-Mingb, Qu Yan-Chenb, Hu Xiao-Yongb, Huang Jin-Zhec, Badikov Valeriid
a Institute for Optical Monitoring, Siberian Branch, Russian Academy of Sciences, Tomsk 634055, Russia Federation; b Institute of Opto-Electronics, Harbin Institute of Technology, Harbin 150001, China; c Institute of Opto-Electronics, Harbin Institute of Technology, Harbin 150001, China; Department of Applied Physics, Harbin University of Science and Technology, (West Campus), Harbin 150080, China; d Kuban State University, Krasnodar 350040, Russia Federation
Abstract  The basic optical property and phase-matching of new mixed AgGaGeS_4 crystal are presented. Frequency conversion, in particular the SHG of 30ns pulses of 9μm emission band of transversely excited atmospheric-pressure (TEA) CO_2 laser, is realized in AgGaGeS_4 for the first time. As high as 0.57% peak power and 0.3% external energy efficiencies, and 0.7mJ harmonic pulse energy are obtained for the 9.55μm emission line at pump intensity of 4% level of the damage threshold.
Keywords:  CO_2 laser      nonlinear crystal      frequency conversion      AgGaGeS_4      second harmonic generation (SHG)  
Received:  09 April 2003      Revised:  13 May 2004      Published:  21 June 2005
PACS:  42.65.Ky (Frequency conversion; harmonic generation, including higher-order harmonic generation)  
  42.70.Mp (Nonlinear optical crystals)  
  42.55.Lt (Gas lasers including excimer and metal-vapor lasers)  
  42.60.Jf (Beam characteristics: profile, intensity, and power; spatial pattern formation)  
Fund: Project supported by National Natural Science Foundation of China (Grant No 69878005) and Natural Science Foundation of Heilongjiang province, China (Grant No F01-10).

Cite this article: 

Andreev Yuri, Geiko Pavel, Shaiduko Anna, Ren De-Ming, Qu Yan-Chen, Hu Xiao-Yong, Huang Jin-Zhe, Badikov Valerii Optical properties and frequency conversion with AgGaGeS_4 crystal 2004 Chin. Phys. 13 1468

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