Two-way optical memory for azobenzene-containing urethane-urea copolymer films

Y. Aoshima, C. Egami, Y. Kawata, Okihiro Sugihara, M. Tsuchimori, O. Watanabe, H. Fujimura, N. Okamoto

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


An azobenzene-containing urethane-urea copolymer as a photochromic material has two optical properties for data storage. One is photoisomerization related to the polarization of incident beam. The other is photoablation related to the intensity of incident beam. It seemed that we could separate them with the power or wavelength of the recording beam. Therefore, we studied the characteristics of the phenomena and found that the selective use of the effects is applicable to some types of memory.

Original languageEnglish
Pages (from-to)177-182
Number of pages6
JournalOptics Communications
Issue number4
Publication statusPublished - 1999 Jul 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering


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