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 journalArticle

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 languageEnglish
JournalApplied Physics Express
Volume4
Issue number5
DOIs
Publication statusPublished - 2011 May 1

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Physics and Astronomy(all)

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