硅酸盐学报2020，Vol.48Issue(2)：182-186,5.DOI:10.14062/j.issn.0454-5648.20190330
大尺寸GaSe单晶生长和光学性能
Growth and Optical Properties of Big-sized GaSe Single Crystals
摘要
Abstract
GaSe is one of novel mid, far-IR and THz nonlinear optical materials with the excellent comprehensive performance. GaSe polycrystalline with a mass of 300 g was synthesized by a two-temperature zone method. GaSe single crystals with 40 mm in diameter and 130 mm in length were obtained via a vertical Bridgman-Stockbarger (B-S) technique. The thermal and optical properties were investigated. The transparency range is from 0.64 μm to 17.80 μm at the absorption level of 1cm-1. The absorption from 0.64 μm to 12.82 μm is less than 0.1 cm-1. The THz absorption spectra show two absorption peaks at 0.58THz and 1.10THz, and the absorption coefficients both are below 5.5 cm-1. The laser damage threshold of GaSe single crystal is 3.2 J/cm2.关键词
硒化镓晶体/中远红外激光/非线性光学材料/太赫兹Key words
gallium selenide crystal/mid/far-infared laser/nonlinear optical materials/terahertz分类
数理科学引用本文复制引用
马天慧,朱崇强,雷作涛,杨春晖,张红晨,王慧文..大尺寸GaSe单晶生长和光学性能[J].硅酸盐学报,2020,48(2):182-186,5.基金项目
国家自然科学基金杰出青年基金项目(51325201) （51325201）
黑龙江省科学基金项目(LH2019E079). （LH2019E079）
