| 非均匀反射体全息窄带带阻滤光片 |
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| 引用本文： | 吴建宏,唐敏学,何庆声,徐颖.非均匀反射体全息窄带带阻滤光片[J].光学学报,2000,20(9):272-1272. |
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| 作者姓名： | 吴建宏 唐敏学 何庆声 徐颖 |
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| 作者单位： | 1. 苏州大学信息光学工程研究所,苏州,215006
2. 清华大学精仪系,北京,100084 |
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| 摘 要： | 在实验基础上，利用非均匀耦合波理论得出了介质折射率调制度和空频变化的非均匀模型，利用此模型分析了窄带宽和高光学密度滤光片所应具有的非均匀分布特性，指出了实验工艺上应努力的方向，实验上用重铬酸明胶（DCG）实现了性能优良的高光学密度窄带宽的全息带阻滤光片，峰值波长光学密度为4－5，半宽度小于20nm.
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| 关 键 词： | 体全息 窄带带阻滤光片 非均匀反射 |
| 收稿时间： | 1999/2/24 |
Nonuniform Reflection Volume Holographic Notch Filter |
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| Wu Jianhong,Tang Minxue,He Qingsheng,Xu Ying.Nonuniform Reflection Volume Holographic Notch Filter[J].Acta Optica Sinica,2000,20(9):272-1272. |
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| Authors: | Wu Jianhong Tang Minxue He Qingsheng Xu Ying |
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| Institution: | Wu Jianhong 1) Tang Minxue 1) He Qingsheng 2) Xu Ying 1) 1),Institute of Information Optical Engineering,Suzhou University,Suzhou 215006 2),Precision Instrument Department,Tsinghua University,Beijing 100084 |
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| Abstract: | On the basis of experiments, the nonuniform models of modulation of refraction index and variation of spatial frequency are obtained by using nonuniform coupled wave theory. The nonuniform distribution characteristics of the filters having high diffraction efficiency and narrow bandwidth are analyzed on the nonuniform model, and a method for improving properties of notch filter is proposed. The holographic notch filters with high optical density and narrow bandwidth are fabricated using dichromated gelatin (DCG). The characteristics of these filters are that the optical density of peak wavelength is between 4 and 5, and the half bandwidth is smaller than 20 nm. |
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| Keywords: | volume holography notch filter dichromated gelatin coupled wave theory |
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