中长波Cr^(2+)/Fe^(2+)∶CdSe激光晶体生长及元件制备  

Growth and Device Fabrication of Mid to Far-Infrared Cr^(2+)/Fe^(2+)∶CdSe Crystals

作　　者：黄昌保[1] 胡倩倩 朱志成 李亚[1,2] 毛长宇 徐俊杰[1] 吴海信 倪友保 HUANG Changbao;HU Qianqian;ZHU Zhicheng;LI Ya;MAO Changyu;XU Junjie;WU Haixin;NI Youbao(Anhui Provincial Key Laboratory of Photonic Devices and Material,Anhui Institute of Optics and Fine Mechanics,Chinese Academy of Sciences,Hefei 230031,China;University of Science and Technology of China,Hefei 230026,China)

机构地区：[1]中国科学院合肥物质科学研究院安徽光学精密机械研究所,安徽省光子器件与材料重点实验室,合肥230031 [2]中国科学技术大学,合肥230026

出　　处：《人工晶体学报》2024年第4期551-553,共3页Journal of Synthetic Crystals

基　　金：国家重点研发计划(2021YFB3601503)。

摘　　要：本文采用自主研发的双温区真空石墨加热单晶炉,通过钼坩埚密封布里奇曼法成功生长出了Cr^(2+)∶CdSe晶体和Fe^(2+)∶CdSe晶体,晶体尺寸达Φ51 mm×110 mm。Cr^(2+)∶CdSe晶体和Fe^(2+)∶CdSe晶体分别在1400~2400 nm和2500~5200 nm波段存在明显的吸收,同时,Cr^(2+)∶CdSe晶体和Fe^(2+)∶CdSe晶体在7~15μm波段透过率均接近CdSe晶体透过极限(~70%),换算吸收系数约为0.005 cm^(-1)。采用钼坩埚密封布里奇曼法制备的Cr^(2+)/Fe^(2+)∶CdSe晶体具有过渡金属离子掺杂浓度可控、掺杂均匀、晶体品质高等优点,可同时作为中波红外激光晶体和长波红外非线性光学晶体材料。In this study,the Cr^(2+)∶CdSe and Fe^(2+)∶CdSe crystals were successfully grown by the Mo-crucible sealed Bridgman method using a vacuum single-crystal furnace with two zones developed by ourselves,and the crystal size reaches Φ51 mm×110 mm.Cr^(2+)∶CdSe and Fe^(2+)∶CdSe crystals demonstrate obvious absorption in the bands of 1400~2400 nm and 2500~5200 nm,respectively.The transmittances of Cr^(2+)/Fe^(2+)doped CdSe crystals are close to the transmittance limit of CdSe crystal(~70%)in the 7~15μm band,and the converted absorption coefficient is about 0.005 cm^(-1).The Cr^(2+)/Fe^(2+)∶CdSe crystals grown by the Mo-crucible sealed Bridgman method have the advantages of the controllable doping concentration of transition metal ions,uniform doping and high crystal quality.The Cr^(2+)/Fe^(2+)∶CdSe crystals could be used as both mid-infrared laser crystal and far-infrared nonlinear optical crystal material.

关 键 词：中远红外激光 非线性光学晶体 激光晶体 过渡金属掺杂 CdSe晶体 晶体生长 布里奇曼法 

分 类 号：O782[理学—晶体学]