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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 3, Iss. 4 — Apr. 1, 2013
  • pp: 472–479

Effects of transient dark currents on the buildup dynamics of refractive index changes in photorefractive polymers excited by pulsed voltage

Takafumi Sassa, Takashi Fujihara, Jun-ichi Mamiya, and Masuki Kawamoto  »View Author Affiliations

Optical Materials Express, Vol. 3, Issue 4, pp. 472-479 (2013)

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We study the influence of a transient dark current on the buildup dynamics of photorefractive index gratings, which are excited right after the onset of a pulsed voltage, by using low glass-transition temperature photorefractive polymers under a heat-assisted condition. We conclude that the development of photorefractive index gratings is majorly controlled by changes in the transient dark current, through the suppression of a saturated photo-induced space-charge electric field. We also show that this influence can be estimated reasonably well by a simple analysis of the measured transient current traces.

© 2013 OSA

OCIS Codes
(160.5320) Materials : Photorefractive materials
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials

ToC Category:
Photorefractive Materials

Original Manuscript: January 2, 2013
Revised Manuscript: February 13, 2013
Manuscript Accepted: February 13, 2013
Published: March 18, 2013

Virtual Issues
Hybrid Organic-Inorganic Materials for Novel Photonic Applications (2013) Optical Materials Express

Takafumi Sassa, Takashi Fujihara, Jun-ichi Mamiya, and Masuki Kawamoto, "Effects of transient dark currents on the buildup dynamics of refractive index changes in photorefractive polymers excited by pulsed voltage," Opt. Mater. Express 3, 472-479 (2013)

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