Dual-function beam shapers fabricated by photoaligned liquid crystal cells

Chia Yi Huang; Hong Yi Tsai; Yi Hong Wang; Chong Ming Huang; Kuang Yao Lo; Chia Rong Lee

doi:10.1143/APEX.4.052502

Dual-function beam shapers fabricated by photoaligned liquid crystal cells

Chia Yi Huang, Hong Yi Tsai, Yi Hong Wang, Chong Ming Huang, Kuang Yao Lo, Chia Rong Lee

Research output: Contribution to journal › Article

Abstract

A dual-function beam shaper is composed of a photoaligned liquid crystal (LC) cell and two polarizers. The photoaligned LC cell is formed by irradiating an intensity-gradient pump beam on each of the two surfaces of a dye-doped LC cell. The LC directors on the irradiated surfaces gradually transit from a homogeneous orientation to a mutually orthogonal homogeneous one. The LC cell under crossed (parallel) polarizers exhibits a lower (higher) transmittance in the center of the director-continuously-rotating region than at the edges of the region. The cell acts as a beam shaper with the function of a beam flattop (compression).

Original language	English
Journal	Applied Physics Express
Volume	4
Issue number	5
DOIs	https://doi.org/10.1143/APEX.4.052502
Publication status	Published - 2011 May 1

All Science Journal Classification (ASJC) codes

Engineering(all)
Physics and Astronomy(all)

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Huang, C. Y., Tsai, H. Y., Wang, Y. H., Huang, C. M., Lo, K. Y., & Lee, C. R. (2011). Dual-function beam shapers fabricated by photoaligned liquid crystal cells. Applied Physics Express, 4(5). https://doi.org/10.1143/APEX.4.052502

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abstract = "A dual-function beam shaper is composed of a photoaligned liquid crystal (LC) cell and two polarizers. The photoaligned LC cell is formed by irradiating an intensity-gradient pump beam on each of the two surfaces of a dye-doped LC cell. The LC directors on the irradiated surfaces gradually transit from a homogeneous orientation to a mutually orthogonal homogeneous one. The LC cell under crossed (parallel) polarizers exhibits a lower (higher) transmittance in the center of the director-continuously-rotating region than at the edges of the region. The cell acts as a beam shaper with the function of a beam flattop (compression).",

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AU - Lee, Chia Rong

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