Two-stage optical data storage in azo polymers

Chikara Egami, Yoshimasa Kawata, Yasuo Aoshima, Samer Alasfar, Okihiro Sugihara, Hisashi Fujimura, Naomichi Okamoto

Research output: Contribution to journalArticlepeer-review

22 Citations (Scopus)


We have demonstrated two-stage optical memory in a photoaddressable azo polymer. The polymer serves as a data storage medium with two recording mechanisms: photoanisotropic modulation and surface-shape modulation. We can select the recording mechanism by manipulating beam energies for recording. The characteristics can be motivated to rewritable and write-once optical memories.

Original languageEnglish
Pages (from-to)1558-1561
Number of pages4
JournalJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Issue number3 B
Publication statusPublished - 2000
Externally publishedYes


  • Azo polymer
  • Optical memory
  • Photoisomerization
  • Surface relief hologram

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)


Dive into the research topics of 'Two-stage optical data storage in azo polymers'. Together they form a unique fingerprint.

Cite this