中国激光, 2004, 31 (s1): 164, 网络出版: 2013-01-29
飞秒激光制备折射率调制光栅及分析
Fabrication of Refractive Index-Modulated Grating in Fused Silica by a Femtosecond Laser
应用光学 折射率调制光栅 飞秒激光微制备 石英玻璃 applied optics: index-modulated grating femtosecond laser microfabrication fused silica
摘要
利用飞秒激光(120fs,810 m,1 kHz)线扫描方法在石英玻璃体内形成折射率调制型光栅结构.研究光栅结构折射率调制度Δn与飞秒激光脉冲能量、扫描速度和扫描重复率等参量的关系.多次扫描的光栅结构Δn提高到3×10-3.说明积累效应对折射率调制结构的形成起重要作用,并解释以往得到Δn大小不同的原因.
Abstract
The refractive index-modulated grating, performed by line scan in fused silica with a femtosecond laser at wavelength of 810 nm and repetition rate of 1 kHz, were presented Dependence of the refractive index-modulation on femtosecond laser pulse energy, scan speed, spacing period, and scanning repetitions was investigated The refractive Index modulation reached to 3×10-3 after several scanning repetitions. It was revealed that the accumulation effect played a very important role in the formation of refractive index-modulated structures.
郭亨长, 王曦, 方瀛, 彭超, 杨宏, 蒋红兵, 龚旗煌. 飞秒激光制备折射率调制光栅及分析[J]. 中国激光, 2004, 31(s1): 164. GUO Heng-chang, WANG Xi, FANG Ying, PENG Chao, YANG Hong, JIANG Hong-bing, GONG Qi-huang. Fabrication of Refractive Index-Modulated Grating in Fused Silica by a Femtosecond Laser[J]. Chinese Journal of Lasers, 2004, 31(s1): 164.
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