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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 20 — Jul. 10, 2010
  • pp: 3894–3899

Photocurrent switching method based on photoisomerization of diarylethene layer for nondestructive readout of photochromic optical memory

Tsuyoshi Tsujioka, Itaru Onishi, and Daisuke Natsume  »View Author Affiliations


Applied Optics, Vol. 49, Issue 20, pp. 3894-3899 (2010)
http://dx.doi.org/10.1364/AO.49.003894


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Abstract

We report on photocurrent switching based on photoisomerization for the nondestructive readout of photochromic optical memory. The photoisomerization of a diarylethene (DAE) memory layer switched the photocurrent generated in a light-absorbing phthalocyanine layer upon irradiation of a laser light. This switching is based on the ionization potential change of the DAE molecules. Switching characteristics of the photocurrent were investigated for the laser light with a wavelength of 410 nm , 630 nm , or 780 nm . Excellent on–off ratios of the photocurrent were achieved by irradiation at 630 nm and 780 nm . When the pulsed laser light with a wavelength of 780 nm was repeatedly irradiated to the colored and uncolored memory devices, no change of the photocurrent signal levels was observed, even after 8 × 10 5 cycles, indicating a successful demonstration of the nondestructive readout.

© 2010 Optical Society of America

OCIS Codes
(160.4890) Materials : Organic materials
(210.0210) Optical data storage : Optical data storage
(210.4810) Optical data storage : Optical storage-recording materials
(160.5335) Materials : Photosensitive materials

ToC Category:
Photocurrent Switching

History
Original Manuscript: April 5, 2010
Manuscript Accepted: June 13, 2010
Published: July 6, 2010

Citation
Tsuyoshi Tsujioka, Itaru Onishi, and Daisuke Natsume, "Photocurrent switching method based on photoisomerization of diarylethene layer for nondestructive readout of photochromic optical memory," Appl. Opt. 49, 3894-3899 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-20-3894

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