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Micropolarizer fabricated from CaCO_(3) by anisotropic wet etching

机译:CaCO_(3)各向异性湿法刻蚀制备的微偏光片

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摘要

A micropolarizer is fabricated on a birefringent crystal, calcite, by anisotropic wet etching. This device consists of a v-groove grating on calcite, covered by an index-matching material. The grating is fabricated by acid wet etching. When its acid concentration and stirring speed are altered, the etching mechanism can be controlled within the surface-reaction regime. This results in anisotropic etching, which produces a v-groove grating on a calcite surface. This v-groove grating can be fabricated to have a period as small as 2 μm. To the best of our knowledge, this type of v-groove calcite grating is reported for the first time. Although the transmission efficiency of this device is wavelength dependent, a broadband micropolarizer can be made by gluing together two devices with periods of 12 and 16 μm.
机译:通过各向异性湿法刻蚀在双折射晶体方解石上制造微偏振器。该设备由方解石上的V型槽光栅组成,并覆盖有折射率匹配的材料。通过酸湿蚀刻来制造光栅。当改变其酸浓度和搅拌速度时,可以在表面反应范围内控制蚀刻机理。这导致各向异性蚀刻,其在方解石表面上产生V型槽光栅。可以将这种v槽光栅的周期制成为2μm。据我们所知,首次报道了这种v型槽方解石光栅。尽管此设备的传输效率取决于波长,但是可以通过将两个周期为12和16μm的设备粘合在一起来制作宽带微偏振器。

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    《Applied optics》 |2003年第22期|共4页
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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 光学;
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