Fabrications of liquid-crystal polarization converters and their applications

Shih-Wei Ko; Shu-Hao Huang; Andy Y.-G. Fuh; Tsung-Hsien Lin

doi:10.1117/12.835617

20 August 2009 Fabrications of liquid-crystal polarization converters and their applications

Shih-Wei Ko, Shu-Hao Huang, Andy Y.-G. Fuh, Tsung-Hsien Lin

Proceedings Volume 7414, Liquid Crystals XIII; 74140O (2009) https://doi.org/10.1117/12.835617
Event: SPIE Photonic Devices + Applications, 2009, San Diego, California, United States

Abstract

This study presents a simple but accurate method for measuring the helical twisting power of chiral doped liquid crystals using axially symmetrical photo-alignment in azo dye-doped liquid crystal films. As reported in our previous paper1, the discontinuous twisting effect produces a disclination line in photo-aligned axially symmetrical liquid crystal films, which can be applied for use as a polarization converter. The pitch and helical twisting power can be obtained by measuring the rotation angle of the disclination line in chrial doped liquid crystal. This method is independent of cell gap and provides an error below 0.5%.

Citation Download Citation

Shih-Wei Ko, Shu-Hao Huang, Andy Y.-G. Fuh, and Tsung-Hsien Lin "Fabrications of liquid-crystal polarization converters and their applications", Proc. SPIE 7414, Liquid Crystals XIII, 74140O (20 August 2009); https://doi.org/10.1117/12.835617

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