Internal modification of glass materials with a femtosecond laser
Internal modification of glass materials with a femtosecond laser
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用飞秒激光对玻璃材料进行内部改性
DOI：
10.1117/12.405739
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发表时间：
2000
期刊：
影响因子：
--
通讯作者：
K. Hirao
中科院分区：
文献类型：
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作者：
K. Hirao
研究了超短脉冲对玻璃的各种微观改性.据证实，永久性的折射率变化，并创建具有二阶非线性光学功能的微晶，可以产生飞秒脉冲激光，只有在选择性的内部区域的玻璃。通过使用具有高重复率的飞秒激光，可以在各种玻璃中成功地写入永久光波导，其中折射率变化沿焦点穿过的路径连续地引起沿着。我们还证实了单晶是从波导中的核心区域通过激光照射产生的，这用于各种光学器件。
The various microscopic modifications in glasses by ultra- short pulses were examined. It was confirmed that permanent refractive index changes, and creation of microcrystals with second-order nonlinear optical functions could be produced with a femtosecond pulse laser only in selective internal areas in glasses. By using a femtosecond laser with a high repetition rater, permanent optical waveguides can be successfully written in various glasses, where refractive index changes are continuously induced along a path traversed by focal point. We also confirmed that single crystals are created from the core region in the waveguides by the laser irradiation, which is used for various kinds of optical devices.