CLBO单晶生长及性能研究  

Growth and Properties of Large Size CLBO Single Crystal

作　　者：石爽爽 王国影 肖亚波 王海丽 陈建荣[1,2] SHI Shuangshuang;WANG Guoying;XIAO Yabo;WANG Haili;CHEN Jianrong(Sinoma Synthetic Crystal Co.,Ltd.,Beijing 100018,China;Beijing Sinoma Synthetic Crystal Co.,Ltd.,Beijing 100018,China)

机构地区：[1]中材人工晶体研究院有限公司,北京100018 [2]北京中材人工晶体研究院有限公司,北京100018

出　　处：《人工晶体学报》2023年第12期2146-2150,共5页Journal of Synthetic Crystals

摘　　要：CsLiB_(6)O_(10)(简称CLBO)是一种性能优良的紫外非线性光学晶体,特别适用于四倍频(266 nm)和五倍频(210 nm)的紫外大功率激光。本文采用顶部籽晶法成功生长出尺寸为120 mm×112 mm×62 mm的CLBO晶体,晶体外观完整,无开裂、散射等宏观缺陷。由该晶体切出五倍频CLBO晶体元件,对其进行了紫外-可见-近红外透过率、光学均匀性、弱吸收性能表征,结果显示,210~1800 nm的平均透过率超过90%,光学均匀性为3.8×10^(-5),1064 nm弱吸收为90×10^(-6)cm^(-1),表明该晶体紫外区透过率良好,光学均匀性高,弱吸收低,为后续相关激光应用研究奠定了基础。CsLiB_(6)O_(10)(CLBO)is a high-performance nonlinear optical crystal,particularly suitable for high-power ultraviolet laser by fourth harmonic generation(FHG,266 nm)and fifth harmonic generation(FIHG,210 nm).A CLBO crystal with the size of 120 mm×112 mm×62 mm was successfully grown using top seeded solution growth(TSSG)method in this work.The grown CLBO crystal exhibits a complete appearance without macroscopic defects such as cracking and visible scattering particles.A CLBO FIHG crystal component was cut from this crystal,and its UV-visible-near infrared transmittance,optical uniformity and weak absorption properties were analyzed in detail.The results include that,the mean transmittance exceeds 90% from 210 nm to 1800 nm,optical uniformity result is 3.8×10^(-5) and the weak absorption is 90×10^(-6) cm^(-1) at 1064 nm.All of these results indicate that the as-grown CLBO crystal possesses good transmittance in the ultraviolet region,high optical uniformity and low weak absorption,laying the foundation for subsequent research on related applications.

关 键 词：CsLiB_(6)O_(10) 非线性光学晶体 顶部籽晶法 透过率 光学均匀性 弱吸收 

分 类 号：O78[理学—晶体学] O734