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大尺寸GaSe单晶生长和光学性能
作者:马天慧1 2 朱崇强2 雷作涛2 杨春晖2 张红晨1 王慧文1 
单位:(1. 黑龙江工程学院材料与化学工程学院 哈尔滨 150050  2. 哈尔滨工业大学化工与化学学院 哈尔滨 150001) 
关键词:硒化镓晶体 中远红外激光 非线性光学材料 太赫兹 
分类号:O782
出版年,卷(期):页码:2020,48(2):0-0
DOI:
摘要:

 通过双温区法合成了GaSe多晶原料,单次合成量可达300 g以上。通过垂直Bridgman–Stockbarger法生长了直径40 mm、长度130 mm的GaSe单晶体,测定了热学和光学性能。结果显示:吸收系数小于1 cm–1的透过波段为0.64 μm~ 17.80 μm,吸收系数小于0.1 cm–1的透过波段为0.64 μm~12.82 μm;太赫兹光谱显示有2个吸收峰,分别在0.58 THz和1.10 THz 处,吸收系数均小于5.5 cm–1;GaSe单晶体的激光损伤阈值为3.2 J/cm2。

基金项目:
国家自然科学基金杰出青年基金项目(51325201);黑龙江省科学基金项目(LH2019E079)。
作者简介:
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