论文部分内容阅读
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 new type of infrared nonlinear optical crystal material developed in recent years. Its main feature is to change the refractive index and birefringence of materials by changing the content of Ga and In, that is to say, the three-wave collinear nonlinearity Non-critical (90 °) phase matching. We grew the single crystal by the vertical Bridgman method to obtain the AgGa1xInxSe2 single crystal rod with the size of 35mm × 50mm. The concentration distribution of crystal growth rod In was tested. The crystal element was observed and tested by infrared observation mirror and spectrophotometer respectively, and the crystal transmittance was good. Using a TEACO2 laser to pump a 5 × 6 × 16mm3 AgGa1 xInxSe2 (x = 0.3234) crystal element, a 10.6μm non-critical phase-matching frequency doubling and a 5.3μm output mid-infrared laser were successfully achieved.