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首页> 外文会议>Conference on Commercial and Biomedical Applications of Ultrafast Lasers >Micro-Raman mapping of micro-gratings in 'BACCARAT' glass directly written using femtosecond laser
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Micro-Raman mapping of micro-gratings in 'BACCARAT' glass directly written using femtosecond laser

机译：使用Femtosecond激光直接写入“百家乐”玻璃中微型光栅的微拉曼映射

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摘要

We present some of our results on the femtosecond laser direct writing and characterization of micro-gratings in Baccarat glass. Gratings were inscribed with amplified 800 nm, ～100 femtosecond pulses at 1 kHz repetition rate. The change in refractive index of the modified region was estimated from grating efficiency measurements and was found to be ～10~(-3). Micro-Raman studies demonstrated an increase in the intensity of the band near 596 cm~(-1) in the laser irradiated region clearly indicating an increase in the refractive index. Micro-Raman mapping of the grating showed a periodic variation of the band intensity further confirming the formation of grating. Structures with sub wavelength dimensions ( < 800 nm) were achieved with shaping of the input pulses using a rectangular slit. Waveguides were inscribed by optimizing parameters like slit width, focusing conditions, translation speed etc. We shall present our results on the physical, spectroscopic and optical characterization of these structures.
机译：我们在百家乐玻璃中的小飞秒激光直接写作和微观光栅表征的一些结果中提出了一些结果。光栅以1kHz的重复率为1 kHz的800nm，〜100毫秒脉冲刻。从光栅效率测量估计改性区域的折射率的变化，发现是〜10〜（-3）。微拉曼研究证明了激光照射区域中的带接近596cm〜（-1）的带的强度增加，清楚地表明折射率的增加。光栅的微拉曼映射显示了带强度的周期性变化，进一步证实了光栅的形成。通过使用矩形狭缝的输入脉冲成形，实现具有子波长尺寸（<800nm）的结构。通过优化狭缝宽度，聚焦条件，翻译速度等优化参数来刻写波导。我们将在这些结构的物理，光谱和光学表征上展示我们的结果。

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