摘要
AgGa1-xInxSe2是近几年来研制的新型红外非线性光学晶体材料,其主要特点是借着Ga和In含量,即x值的变化,改变材料的折射率、双折射,实现三波共线非线性作用的非临界(90°)相位匹配。我们用垂直布里奇曼法生长单晶,获得了35mm×50mm的AgGa1 xInxSe2单晶棒。对生长出晶体棒In的浓度分布进行了测试。晶体元件用红外观察镜和分光光度计分别进行了观察和测试,晶体透光率良好。用一台TEACO2激光泵浦一块5×6×16mm3 的AgGa1 xInxSe2(x=0.3234)晶体元件,成功地实现了10.6μm非临界相位匹配倍频,输出5.3μm的中红外激光。
AgGa1-xInxSe2 is a novel IR nonlinear crystal material developed in recent years, the main advantage of which is that by varying the contents of gallium and indium, that is, value of x, its reflective index and birefringence will be changed, so that the 90° non-critical phase matching (NCPM) in the three-frequency colinear nonlinear interaction can be realized. The boules with 35mm in diameter and 50mm in length were grown by using the vertical Bridgman technique in our laboratory. The indium concentration was measured along the length of the boule and across the diameter of the boule. The crystal characterizations were obtained by means of IR observation and IR spectrophotometer, which show an excellent transparency for as-grown crystals. Frequency doubling of 10.6 μm radiation from a TEA CO2 laser was demonstrated by pumping a AgGa1-xInxSe2 (x = 0.3234) sample of 5 × 6 × 16 mm3 under the noncritical phase matching condition, resulting an output of 5.3 μm mid-infrared laser light.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2005年第3期408-411,共4页
Journal of Synthetic Crystals
关键词
硒铟镓银晶体
非线性光学晶体
布里奇曼法
倍频
AgGa_(1-x)In_xSe_2 crystal
nonlinear optical crystal
Bridgman technique
frequency doubling
