红外非线性晶体GaSe的合成、生长与性能:红外非线性晶体GaSe的合成、生长与性能
Investigation of the infrared nonlinear crystal material GaSe
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作 者:倪友保 吴海信 黄昌保 程旭东 王振友 毛明生
NI You-bao, WU Hai-xin, HUANG Chang-bao, CHENG Xu-dong, WANG Zhen-you, MAO Ming-sheng ( Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031 )
机构地区:中国科学院安徽光学精密机械研究所,安徽合肥230031
出 处:《激光与红外》 CSCD 2014年第44卷第1期 46-49页,共4页
Laser & Infrared
基 金:国家自然科学基金项目(No.51202250)资助.
摘 要:针对高品质红外非线性晶体GaSe难以生长、加工的问题,研究了垂直布里奇曼法籽晶定向生长技术。制备出Ф20mm×50mm完整单晶,探索了加工工艺,对样品进行了粉末衍射,能谱等测试,晶体在1.06~15μm波段吸收系数约为0.05~0.16cm^-1,完整性、光学质量均较好。演示了9.3~10.6μm波段的CO2激光倍频实验,输出4.65~5.3μm对应倍频光。
Aiming at the problem of growth and treating of large high quality GaSe infrared crystal, the seed aided ver- tical Bridgman technique and "puck" cutting method are studied. Finally, boule size of GaSe crystal with 20mm in di- ameter and 50mm in length is obtained;some samples are prepared under different directions. There are characterized with X-ray diffraction,EDS spectrum and so on. Absorption coefficient about 0. 05 -0. 16cm ^-1in the range 1.06 - 15 μm is achieved. Frequency doubling from 9.3 - 10.6 l,m to 4.65 - 5.3 μm for a TEA CO2 laser is demonstrated. But how to avoid the deformation of crystals under this cure technique for direct phase matching experiments is still a big challenge.
关键词:非线性光学晶体 GaSe晶体 布里奇曼法 中远红外波段 倍频
nonlinear optical crystal ; GaSe crystal ; vertical Bridgman technique ; mid-far infrared wavelength ; frequen-cy doubling ;