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Proceedings Article

Optical phase-control devices using liquid crystal molecular orientation density

[+] Author Affiliations
Satoshi Yanase

Akita Research Institute of Advanced Technology (Japan)

Marenori Kawamura, Rumiko Yamaguchi, Susumu Sato

Akita Univ. (Japan)

Takeshi Takahashi

Sankyo Kogaku Industries Ltd. (Japan)

Proc. SPIE 5936, Liquid Crystals IX, 593614 (August 22, 2005); doi:10.1117/12.618168
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From Conference Volume 5936

  • Liquid Crystals IX
  • Iam-Choon Khoo
  • San Diego, California, USA | July 31, 2005

abstract

We propose optical phase-control devices using a liquid crystal (LC) material without applying a voltage, and demonstrate a composite alignment of LC molecules on a substrate with a patterned photo-resist film, where LC molecules are partly aligned parallel and perpendicular directions divided into very small areas on the substrate. The patterned film such as randomly distributed circular areas of small diameter size is fabricated by using a photo-mask and a photolithography technique. The LC cells are prepared using the locally composite alignment substrate and a perpendicular alignment substrate. The optical phase of the transmission light through the different pattern density regions was measured. Then, it is found that the optical retardation of the higher pattern density region is larger than that of the lower one.

© (2005) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Satoshi Yanase ; Marenori Kawamura ; Rumiko Yamaguchi ; Takeshi Takahashi and Susumu Sato
"Optical phase-control devices using liquid crystal molecular orientation density", Proc. SPIE 5936, Liquid Crystals IX, 593614 (August 22, 2005); doi:10.1117/12.618168; http://dx.doi.org/10.1117/12.618168


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