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《Journal of Functional Materials》 2001-01
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Studies of Structure and Optical Properties on AgGaSe_2 Crystal

ZHAO Beijun 1,ZHU Shifu 1,LI Zhenghui 1,FU Shishen 2,YU Fengliang 1,LI Qifeng 1 (1.Dep. of Mat. Sci.; 2. Dep. of Textile Chemical., Sichuan University, Chengdu, 610064,China)  
Infrared nonlinear optical crystal AgGaSe 2 with 22 mm in diameter and 88mm in length have been grown by descending ampoule with rotation technique. Structure and optical properties were characterized. Results indicated that structure of the crystal belong to 4-2m point group, the lattice parameter a and c equal to 0.59933nm and 1.0881nm respectively, the melt point is 860℃, the IR transmission at the wavelength 10.6μm is 62.4% and by pumping the crystal sample with 150mJ pulses from a CO 2 TEA laser, an energy conversion efficiency of 12% for frequency doubling from 10.6μm to 5.3μm was obtained. What is more, scanning electron microscopy (SEM) observation and measurement of nuclear radiation spectra were also performed.
【Fund】: 国家自然科学基金资助项目!(591 72 0 73);; 国家 863高技术资助项目!(71 5 - 0 4 - 0 1 - 0 4 )
【CateGory Index】: O73
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