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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 40, Iss. 17 — Jun. 10, 2001
  • pp: 2895–2901

Dual-use chromophores for photorefractive and irreversible photochromic applications

Kristi D. Harris, Rajani Ayachitula, Shane J. Strutz, L. Michael Hayden, and Robert J. Twieg  »View Author Affiliations


Applied Optics, Vol. 40, Issue 17, pp. 2895-2901 (2001)
http://dx.doi.org/10.1364/AO.40.002895


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Abstract

Holographic experiments are performed on a series of dual-use chromophore molecules wherein both irreversible photochromic and erasable photorefractive holographic gratings can be written in the same storage volume. At 675 nm, the chromophore undergoes a photochemical reaction leading to the creation of irreversible holographic gratings. Alternatively, at longer wavelengths, application of an electric field during grating formation allows the storage of erasable photorefractive holograms in the same location as previously stored permanent photochemical holograms. Photochemical gratings (η > 60%) can be written in less than 1 min, whereas photorefractive gratings (η > 50%) can be written in less than 1 s. The photochemical gratings have a diffusion-limited dark half-life of as long as two weeks depending on the glass transition temperature of the composite.

© 2001 Optical Society of America

OCIS Codes
(050.7330) Diffraction and gratings : Volume gratings
(100.0100) Image processing : Image processing
(160.2900) Materials : Optical storage materials
(160.5320) Materials : Photorefractive materials
(160.5470) Materials : Polymers

History
Original Manuscript: September 5, 2000
Revised Manuscript: March 12, 2001
Published: June 10, 2001

Citation
Kristi D. Harris, Rajani Ayachitula, Shane J. Strutz, L. Michael Hayden, and Robert J. Twieg, "Dual-use chromophores for photorefractive and irreversible photochromic applications," Appl. Opt. 40, 2895-2901 (2001)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-40-17-2895

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