標題: A polarization-independent liquid crystal phase modulation using polymer-network liquid crystal with orthogonal alignment layers
作者: Chen, Ming-Syuan
Lin, Wei-Chih
Tsou, Yu-Shih
Lin, Yi-Hsin
光電工程學系
Department of Photonics
公開日期: 1-Jan-2012
摘要: 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 (similar to 0.4 pi rad) than the residual phase type (< 0.05 pi 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.
URI: http://dx.doi.org/10.1117/12.930845
http://hdl.handle.net/11536/21599
ISBN: 978-0-8194-9192-3
ISSN: 0277-786X
DOI: 10.1117/12.930845
期刊: LIQUID CRYSTALS XVI
Volume: 8475
Issue: 
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Appears in Collections:Conferences Paper