(1. 湘潭大學(xué) 材料與光電物理學(xué)院，湘潭 411105；
2. 湘潭大學(xué) 低維材料及其應(yīng)用技術(shù)教育部重點實驗室，湘潭 411105；
3. 武漢理工大學(xué) 硅酸鹽材料科學(xué)與工程教育部重點實驗室，武漢 430070)
摘 要: 采用傳統(tǒng)的熔融淬冷法制備不同鍺銻比的GeSbS硫系玻璃。通過研究玻璃的拉曼光譜、掃描電鏡和電子探針顯微分析后發(fā)現(xiàn)，硫系玻璃內(nèi)部的微結(jié)構(gòu)缺陷對其二階非線性光學(xué)性能有顯著影響，玻璃體系內(nèi)存在的Sb2S3微晶或金屬銻顆粒能使硫系玻璃在未經(jīng)極化處理前就具有較大的二階非線性光學(xué)性能；經(jīng)電場溫度場極化處理后，隨著微晶的增多和進(jìn)一步長大，導(dǎo)致GeSbS玻璃具有更高的非線性光學(xué)性能；由于Sb2S3微晶或金屬銻的存在，導(dǎo)致玻璃具有較高的二階非線性光學(xué)性能。
關(guān)鍵字: 硫系玻璃；二階非線性光學(xué)性能；電場溫度場極化；微晶
（1. Faculty of Materials Optoelectronics and Physics, Xiangtan University, Xiangtan 411105, China;
2. Key Laboratory of Low Dimensional Materials and Application Technology, Ministry of Education, Xiangtan University, Xiangtan 411105, China;
3. Key Laboratory of Silicate Materials Science and Engineering, Ministry of Education,Wuhan University of Technology, Wuhan 430070, China）
Abstract:GeSbS chalcogenide glasses with various ratios of germanium and antimony were prepared by conventional melt-quenching method. The results of Raman, SEM and EPMA tests show that the microstructure defects of the chalcogenide glasses play an important part in their second-order nonlinear optical properties (SNOP). The glasses show large SNOP because of Sb2S3 microcrystal or the mental antimony in the glasses even before they were polarized. After the electrical/thermal polarized, GeSbS glasses show larger SNOP with the increase and growth of the microcrystal. The glasses show larger SNOP because of the existence of Sb2S3 microcrystal or the mental antimony in the glasses.
Key words: chalcogenide glasses; second-order nonlinear optical property; electrical/thermal poling; microcrystal
