A polarization-independent liquid crystal phase modulation using polymer-network liquid crystal with orthogonal alignment layers

Ming Syuan Chen, Wei Chih Lin, Yu Shih Tsou, Yi-Hsin Lin*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A polarization-independent liquid crystal (LC) phase modulation using polymer-network liquid crystals with orthogonal alignments layers (T-PNLC) is demonstrated. T-PNLC consists of three layers. LC directors in the two layers near glass substrates are orthogonal to each other. In the middle layer, LC directors are perpendicular to the glass substrate. The advantages of such T-PNLC include polarizer-free, larger phase shift (∼0.4π rad) than the residual phase type (<0.05π rad), and low operating voltage (< 30V rms). It does not require bias voltage for avoiding scattering because the refractive index of liquid crystals matches that of polymers. The phase shift of T-PNLC is affected by the cell gap and the curing voltages. The potential applications are laser beam steering, spatial light modulators and electrically tunable micro-lens arrays.

Original languageEnglish
Title of host publicationLiquid Crystals XVI
DOIs
StatePublished - 1 Dec 2012
EventLiquid Crystals XVI - San Diego, CA, United States
Duration: 12 Aug 201215 Aug 2012

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume8475
ISSN (Print)0277-786X

Conference

ConferenceLiquid Crystals XVI
CountryUnited States
CitySan Diego, CA
Period12/08/1215/08/12

Keywords

  • Liquid-crystal devices
  • Phase modulators
  • Polarization independent phase modulators

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    Chen, M. S., Lin, W. C., Tsou, Y. S., & Lin, Y-H. (2012). A polarization-independent liquid crystal phase modulation using polymer-network liquid crystal with orthogonal alignment layers. In Liquid Crystals XVI [84750S] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8475). https://doi.org/10.1117/12.930845