学術雑誌論文

学術雑誌論文

text

Applied Physics Letters. 2007, 90(7), p. 071107-071107

Optical tuning and switching of photonic defect modes in cholestericliquid crystals

AIP Publishing

英語

text

2007-02-15

https://doi.org/10.1063/1.2560805

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Hiroyuki Yoshida, Chee Heng Lee, Yusuke Miura, Akihiko Fujii, and Masanori Ozaki, Appl. Phys. Lett. 90, 071107 (2007) and may be found at https://doi.org/10.1063/1.2560805.

Optical tuning of photonic defect modes in cholesteric liquid crystals is demonstrated based on a contrast in the pitch length. Two-photon laser lithography was performed in a cholesteric helix to leave an unpolymerized region in the center to act as a structural defect. The unpolymerized region was then substituted by an azobenzene dye-doped cholesteric liquid crystal which exhibits a pitch shortening upon ultraviolet exposure. Reversible shifting or on-off switching of the defect mode was realized as a result of selectively inducing a pitch shortening of the cholesteric liquid crystal at the defect and changing the contrast in the pitch length between the bulk and defect. The authors thank Merck KGaA for the photopolymerizable ChLC mixture. This work is partly supported by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology of Japan.

75660

Optical tuning and switching of photonic defect modes in cholestericliquid crystals

AIP Publishing

英語

2007-02-15

Applied Physics Letters

90

7

071107

071107

https://doi.org/10.1063/1.2560805

https://hdl.handle.net/11094/75660