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Formation of in-volume nanogratings with sub-100-nm periods in glass by femtosecond laser irradiation

机译:飞秒激光辐照在玻璃中形成亚纳米周期的体积小于100 nm的纳米光栅

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摘要

We present direct experimental observation of the morphological evolution during the formation of nanogratings with sub-100-nm periods with the increasing number of pulses. Theoretical simulation shows that the constructive interference of the scattering light from original nanoplanes will create an intensity maximum located between the two adjacent nanoplanes, resulting in shortening the nanograting period by half. The proposed mechanism explains the formation of nanogratings with periods beyond those predicted by the nanoplasmonic model. (C) 2015 Optical Society of America
机译:我们提出了直接实验观察,随着脉冲数的增加,亚光栅在100nm以下的纳米光栅形成过程中的形态演变。理论仿真表明,来自原始纳米平面的散射光的相长干涉将在两个相邻的纳米平面之间产生最大强度,从而将纳米光栅化周期缩短一半。提出的机制解释了纳米光栅的形成,其周期超出了纳米等离子体模型预测的周期。 (C)2015年美国眼镜学会

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