Embedded nanogratings in fused silica and germanium dioxide glass induced by a low-repitition-rate f

• 作 者: FangtengZhang;JianrongQiu;
• 机 构: State Key Laboratory of Luminescent Materials and Devices and Institute of Optical Communication Mat
• 出 处: 第七届中国功能玻璃学术研讨会暨新型光电子材料国际论坛
• 发表日期: 2014年期

　　Micro-fabrication in transparent materials by femtosecond laser has become a hot research spot in the past decade.Nanogratings fabricated inside glasses have showed great potentials in microfluidics and optical applications.In this paper,we present our recent experimental results on fabrication of embedded nanogratings in fused silica and germanium dioxide glass by a 1 kHz femtosend laser.Similar birefringence phenomenon was observed in both fused silica and germanium dioxide glass, as shown in Fig.1.The nanograting formation conditions in both glasses are analyzed in terms of the difference of material performance and the effect of laser repetition rate.The promising application as a light attenuator by tailoring the nanograting-structure was demonstrated in fused silica.Our experimental results provide some new insights into the characteristics of fs laser induced self-organized nanogratings in glass and an alternative way to produce a polarization-dependent light attenuator that may find promising applications in micro-optics.