Design of non-polarization long-wave-pass edge filter

BAO Jia-qi; LIU Xiang-biao; YU Kan

doi:10.3788/OPE.20162413.0082

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Design of non-polarization long-wave-pass edge filter

更新时间：2020-08-13

- Design of non-polarization long-wave-pass edge filter
- Optics and Precision Engineering Vol. 24, Issue 10s, Pages: 82-86(2016)
- 作者机构：
  
  1. 文华学院信息科学与技术学部,湖北武汉,430074
  2. 武汉墨光科技有限公司,湖北武汉,430074
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20162413.0082
  CLC： O484
- Received：11 May 2016，
  
  Revised：12 June 2016，
  
  Published：14 November 2016
- 稿件说明：
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包佳祺, 刘祥彪, 俞侃. 长波通截止滤光片的消偏振设计[J]. 光学精密工程, 2016,24(10s): 82-86

BAO Jia-qi, LIU Xiang-biao, YU Kan. Design of non-polarization long-wave-pass edge filter[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 82-86
包佳祺, 刘祥彪, 俞侃. 长波通截止滤光片的消偏振设计[J]. 光学精密工程, 2016,24(10s): 82-86 DOI： 10.3788/OPE.20162413.0082.

BAO Jia-qi, LIU Xiang-biao, YU Kan. Design of non-polarization long-wave-pass edge filter[J]. Editorial Office of Optics and Precision Engineering, 2016,24(10s): 82-86 DOI： 10.3788/OPE.20162413.0082.

摘要

常规结构的薄膜干涉截止滤光片在倾斜入射时由于其P和S偏振光会产生明显的波长分离现象，导致其截止边带会出现严重的偏振相关损耗。本文基于TiO

和SiO

两种常规膜料设计了一种长波通干涉截止滤光片的消偏振膜系结构。通过在高折率间隔层的两侧添加不同厚度的低折射率材料作为匹配层，构建膜系评价函数并利用计算机自动寻优，得到了最优的膜系结构（（H/2）4L2H4L（H/2））

。该截止滤光片在45°倾斜入射时3 dB位置的截止边带偏振波长分离小于2 nm通带透射率超过92%，偏振敏感性得到了有效的抑制。利用该算法和膜系结构可以较为容易地设计和制备消偏振的长波通干涉截止滤光片。

Abstract

An oblique incidence on the conventional film interference cut-off filter will result in an obvious phenomenon of wavelength separation due to its P and S polarized lights

thus leading to serious polarization dependent loss in the cut-off band. Based on two ordinary film materials TiO

and SiO

this paper designs a depolarized stack structure for the long wave-pass interference cut-off filter through adding low refractive material with different thicknesses as matching layers above and under the high refractive layer. The algorithm for stack calculation was proposed and operated on a computer

thereby obtaining an optimal stack structure of ((H/2)4L2H4L(H/2))

. The stack enables the cut-off filter to achieve a polarization wavelength separation less than 2 nm in the cut-off sideband and a bandpass transmittance over 92% when the filter is in the position of 3 dB with an oblique incidence angel of 45°. Using the algorithm and the stack

the depolarized long-wave-pass interference edge filter can be easily designed and fabricated.

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Keywords

references

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