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首页> 外文期刊>Optics Letters >In situ observation of photoinduced refractive-index changes in filaments formed in glasses by femtosecond laser pulses
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In situ observation of photoinduced refractive-index changes in filaments formed in glasses by femtosecond laser pulses

机译：飞秒激光脉冲在玻璃中形成的细丝的光致折射率变化的原位观察

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摘要

We investigated the relationship between the formation of filaments and local refractive-index changes induced by femtosecond laser pulses in silica glass. In situ observation revealed that the location of a filament coincided with that of the refractive-index change. Observation also showed that the region of refractive-index change was elongated toward the upstream direction of the laser pulses with increasing exposure time. The region of refractive-index change was several hundred micrometers long, and its diameter was smaller than 2 mum. The refractive-index change was confirmed by two of three different methods to be as large as 0.8 x (C) 2001 Optical Society of America OCIS codes: 130.2790, 190.7110, 190.3270, 230.7370, 320.7110, 160.2750. [References: 14]
机译：我们研究了丝状玻璃的形成与飞秒激光脉冲在石英玻璃中引起的局部折射率变化之间的关系。原位观察表明，细丝的位置与折射率变化的位置重合。观察还表明，随着曝光时间的增加，折射率变化的区域朝着激光脉冲的上游方向拉长。折射率变化的区域长数百微米，其直径小于2微米。通过三种不同方法中的两种方法确认折射率变化最大为0.8 x（C）美国光学学会2001 OCIS代码：130.2790、190.7110、190.3270、230.7370、320.7110、160.2750。 [参考：14]

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