Photoinduced birefringence and reversible optical storage in liquid-crystalline azobenzene side-chain polymers

Changshun Wang, Haosheng Fei, Yong Qiu, Yanqiang Yang, Zhenqian Wei, Yanqing Tian, Yongmei Chen, Yingying Zhao

Research output: Contribution to journalArticle

66 Citations (Scopus)

Abstract

A liquid crystal with an azobenzene moiety as a photoactive mesogenic unit is investigated in photoinduced birefringence. Measurements reveal that it possesses large magnitude of photoinduced birefringence (Δn∼10-2) and the characteristic of long-term optical storage. The resulting polarization information can be erased either by heating the sample to a temperature much higher than the glass transition temperature, or by optical method with a circularly polarized light. The mechanism of long-term optical storage is discussed in this letter.

Original languageEnglish (US)
Pages (from-to)19-21
Number of pages3
JournalApplied Physics Letters
Volume74
Issue number1
DOIs
StatePublished - 1999
Externally publishedYes

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birefringence
polymers
liquids
glass transition temperature
polarized light
liquid crystals
optics
heating
polarization

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Cite this

Photoinduced birefringence and reversible optical storage in liquid-crystalline azobenzene side-chain polymers. / Wang, Changshun; Fei, Haosheng; Qiu, Yong; Yang, Yanqiang; Wei, Zhenqian; Tian, Yanqing; Chen, Yongmei; Zhao, Yingying.

In: Applied Physics Letters, Vol. 74, No. 1, 1999, p. 19-21.

Research output: Contribution to journalArticle

Wang, Changshun ; Fei, Haosheng ; Qiu, Yong ; Yang, Yanqiang ; Wei, Zhenqian ; Tian, Yanqing ; Chen, Yongmei ; Zhao, Yingying. / Photoinduced birefringence and reversible optical storage in liquid-crystalline azobenzene side-chain polymers. In: Applied Physics Letters. 1999 ; Vol. 74, No. 1. pp. 19-21.
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