中国激光, 2018, 45 (12): 1202006, 网络出版: 2019-05-09
飞秒激光直写实现氧化锗玻璃内部光调制 
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Realization of Optical Modulation in Germanium Oxide Glass by Femtosecond Laser Direct Writing
激光技术 飞秒激光 纳米光栅 氧化锗玻璃 光调制 laser technique femtosecond laser nanograting germanium oxide glass optical modulation
摘要
国家自然科学基金、广东工业大学“计划”启动基金;
Abstract
The structural characteristics and the key influencing factors of self-assembled nanogratings within GeO2 glass are investigated by using an ultrafast laser system with tunable repetition rate and pulse duration. The formation threshold of nanogratings in GeO2 glass is experimentally determined, which is dependent on material bandgap and laser pulse duration. In addition, based on the optimization of process parameters and the use of birefringence of nanogratings, the micro-optical components are fabricated within GeO2 glass and their functions are demonstrated. Moreover, the influence of repetition rate of femtosecond laser on the formation and structural properties of nanogratings is also analyzed. It is found that the birefringence strength of nanograting in GeO2 glass has an anomalous polarization dependence, and the corresponding origin is speculated.
张芳腾, 聂兆刚, 邱建荣. 飞秒激光直写实现氧化锗玻璃内部光调制[J]. 中国激光, 2018, 45(12): 1202006. Fangteng Zhang, Zhaogang Nie, Jianrong Qiu. Realization of Optical Modulation in Germanium Oxide Glass by Femtosecond Laser Direct Writing[J]. Chinese Journal of Lasers, 2018, 45(12): 1202006.
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