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Browse Journals & Magazines > Applied Physics Letters ...> Volume:94 Issue:9 Help

Position sensitive, continuous wavelength tunable laser based on photopolymerizable cholesteric liquid crystals with an in-plane helix alignment

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6 Author(s)
Yoshida, Hiroyuki ; Department of Electrical, Electronic and Informational Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamada-oka, Suita, Osaka 565-0871, Japan ; Inoue, Yo ; Isomura, Takuya ; Matsuhisa, Yuko
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.3089846 

Position sensitive lasing with continuous wavelength tunability and emission in the cell-plane direction is demonstrated from a photopolymerized cholesteric liquid crystal film. The device has a gradually dilating helix lying in the cell-plane direction and is fabricated by applying a vertical electric field in a conventionally rubbed wedge cell while cooling the sample from the isotropic phase. Tuning range of ∼100 nm is achieved by translating the device with respect to the pump beam. Photopolymerizable materials are especially useful in this configuration since a freestanding film, not requiring any external voltage to maintain the molecular ordering, can be prepared.

Published in:
Applied Physics Letters  (Volume:94 ,  Issue: 9 )

Date of Publication: Mar 2009

Page(s):
093306 - 093306-3
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.3089846
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Mar 2009

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