High-efficiency Fresnel lens fabricated by axially symmetric photoalignment method

Yao Han Huang, Shih Wei Huang, Shu Chun Chu, Ying Guey Fuh

研究成果: Article同行評審

7 引文 斯高帕斯(Scopus)

摘要

In this study, a Fresnel lens with radial and azimuthal liquid crystal (LC) alignments in the odd and even zones was fabricated using the photoalignment technique based on an azo dye doped in LC cells. The lens has approximately 35% focusing efficiency as determined using a linearly polarized probe beam. In addition, the lens converts the input linear polarization into axially symmetrical polarization at the focal plane. The fabricated Fresnel lens is polarization-independent and has electrically controllable focusing efficiency. Moreover, the far-field pattern of a probe beam through the device placed between the polarizers agrees with the pattern obtained from the simulation.

原文English
頁(從 - 到)7739-7744
頁數6
期刊Applied optics
51
發行號32
DOIs
出版狀態Published - 2012 11月 10

All Science Journal Classification (ASJC) codes

  • 原子與分子物理與光學
  • 工程(雜項)
  • 電氣與電子工程

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