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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 4 — Feb. 1, 2002
  • pp: 700–706

Thermally assisted recording of holographic gratings in semicrystalline azobenzene-containing polymers

Jiro Minabe, Katsunori Kawano, and Yasunari Nishikata  »View Author Affiliations


Applied Optics, Vol. 41, Issue 4, pp. 700-706 (2002)
http://dx.doi.org/10.1364/AO.41.000700


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Abstract

We examine optically induced birefringence in semicrystalline azopolymer films that are held at glass-transition temperature Tg. The birefringence increases markedly after interception of the pump beam; the saturation value depends on exposure time. In addition, the induced birefringence is completely erased by irradiation with a circularly polarized beam at Tg. Using this thermally assisted method, we demonstrate the holographic recording of a test image. The intensity of the diffracted beam also increases after interception of the writing beams. Furthermore, the retrieved image is found to have a resolution of ∼30 lp/mm. This resolution is comparable with that of the optical setup that is used. Accordingly, the thermally assisted recording by use of semicrystalline azopolymers is a promising method for reversible holographic storage.

© 2002 Optical Society of America

OCIS Codes
(090.2900) Holography : Optical storage materials
(160.5470) Materials : Polymers
(210.2860) Optical data storage : Holographic and volume memories
(210.4810) Optical data storage : Optical storage-recording materials

History
Original Manuscript: March 19, 2001
Revised Manuscript: July 24, 2001
Published: February 1, 2002

Citation
Jiro Minabe, Katsunori Kawano, and Yasunari Nishikata, "Thermally assisted recording of holographic gratings in semicrystalline azobenzene-containing polymers," Appl. Opt. 41, 700-706 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-4-700

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