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首页> 外文期刊>Optics Letters >Fabrication of polarization-dependent light attenuator in fused silica using a low-repetition-rate femtosecond laser
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Fabrication of polarization-dependent light attenuator in fused silica using a low-repetition-rate femtosecond laser

机译：低重复频率飞秒激光在熔融石英中制备偏振相关的光衰减器

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摘要

In this Letter, we have demonstrated the direct writing of polarization-dependent light attenuator inside fused silica by tailoring 1 kHz femtosecond (fs) laser induced self-organized nanogratings. Optical birefringence was observed to vary with the polarization plane azimuth of the fs laser and scanning direction. The formation of self-organized nanogratings was confirmed by scanning electron microscopy observation. A polarization-dependent light attenuator was fabricated by forming a plane consisting of nanograting lines inside fused silica by scanning the fs laser. The attenuation efficiency was improved by forming a multilayer nanograting structure. The technique may find important applications in micro-optical devices.
机译：在这封信中，我们通过定制1 kHz飞秒（fs）激光诱导的自组织纳米光栅，证明了在熔融石英内部直接写入偏振相关的光衰减器。观察到光学双折射随fs激光的偏振面方位角和扫描方向变化。通过扫描电子显微镜观察证实了自组织纳米光栅的形成。偏振相关的光衰减器是通过扫描fs激光器在熔融石英内部形成由纳米光栅线组成的平面而制成的。通过形成多层纳米光栅结构提高了衰减效率。该技术可能在微光学设备中找到重要的应用。

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