Optically controllable transflective spatial filter with high- and low-pass or notch- and band-pass functions based on a dye-doped cholesteric liquid crystal film

H. C. Yeh, Jung-Der Wang, K. C. Lo, Chia-Rong Lee, T. S. Mo, S. Y. Huang

研究成果: Article

7 引文 (Scopus)

摘要

This study developed an optically controllable transflective spatial filter in a dye-doped cholesteric liquid crystal (DDCLC) film. The mechanism to induce the spatial filter is attributable to the photoisomerization-induced controllability of the redshift of the reflection band in the DDCLC cell. At various pumped intensities, different spatial distributions of the diffraction pattern of the object can be selected to be filtered, such that high- and low-pass or notch- and band-pass transmitted and reflected images can be simultaneously obtained, respectively.

原文English
文章編號011121
期刊Applied Physics Letters
92
發行號1
DOIs
出版狀態Published - 2008 一月 16

指紋

notches
doped crystals
dyes
liquid crystals
filters
controllability
spatial distribution
diffraction patterns
cells

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

引用此文

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AU - Yeh, H. C.

AU - Wang, Jung-Der

AU - Lo, K. C.

AU - Lee, Chia-Rong

AU - Mo, T. S.

AU - Huang, S. Y.

PY - 2008/1/16

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AB - This study developed an optically controllable transflective spatial filter in a dye-doped cholesteric liquid crystal (DDCLC) film. The mechanism to induce the spatial filter is attributable to the photoisomerization-induced controllability of the redshift of the reflection band in the DDCLC cell. At various pumped intensities, different spatial distributions of the diffraction pattern of the object can be selected to be filtered, such that high- and low-pass or notch- and band-pass transmitted and reflected images can be simultaneously obtained, respectively.

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