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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 14 — May. 10, 2002
  • pp: 2613–2620

Hologram recording in polyvinyl alcohol/acrylamide photopolymers by means of pulsed laser exposure

Celia Garcia, Inmaculada Pascual, Angel Costela, Inmaculada Garcia-Moreno, Clara Gomez, Antonio Fimia, and Roberto Sastre  »View Author Affiliations


Applied Optics, Vol. 41, Issue 14, pp. 2613-2620 (2002)
http://dx.doi.org/10.1364/AO.41.002613


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Abstract

The variation in transmittance produced when a photopolymer is irradiated with a pulsed laser is analyzed and experimental results obtained when diffraction gratings are stored using pulsed exposure are presented. In either case, the influence of the energy of the irradiation pulse, the number of pulses, and the pulse repetition rate were studied. The photopolymer used was an acrylamide/polyvinyl alcohol dry film with a yellow eosin-thiethanol-amine mixture as a photoinitiator system. The recording of the gratings was performed by use of a holographic copying process. The samples were exposed and holograms recorded with a collimated beam from a frequency-doubled Nd:YAG (532 nm) Q-switched laser. Our initial results show that it is possible to obtain diffraction gratings with a diffraction efficiency of 60% and a refractive index modulation up to 2.8 × 10-3. The energetic sensitivities achieved are close to those obtained with the same material and continuous irradiation without a preprocessing of the gratings.

© 2002 Optical Society of America

OCIS Codes
(090.0090) Holography : Holography
(090.2900) Holography : Optical storage materials
(160.5470) Materials : Polymers

History
Original Manuscript: August 27, 2001
Revised Manuscript: January 2, 2002
Published: May 10, 2002

Citation
Celia Garcia, Inmaculada Pascual, Angel Costela, Inmaculada Garcia-Moreno, Clara Gomez, Antonio Fimia, and Roberto Sastre, "Hologram recording in polyvinyl alcohol/acrylamide photopolymers by means of pulsed laser exposure," Appl. Opt. 41, 2613-2620 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-14-2613


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