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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 9, Iss. 10 — Oct. 1, 1992
  • pp: 1825–1831

Effects of a single optical beam on photorefractive materials: steady-state solution

C. Xu, D. Statman, and J. K. McIver  »View Author Affiliations


JOSA B, Vol. 9, Issue 10, pp. 1825-1831 (1992)
http://dx.doi.org/10.1364/JOSAB.9.001825


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Abstract

The band transport model describes charge statics and dynamics within photorefractive materials. Here a steady-state solution is found for the setting in which an arbitrary optical beam illuminates a photorefractive material. The specific case of a Gaussian beam is investigated. The effects of intensity and beam waist are discussed. A comparison is made with previous studies of this problem. It is found that, when the rate of photoexcitation is less than that of thermal excitation, the band transport model can be linearized. In this case the charge density and the space-charge field are proportional to the intensity of the light. On the other hand, when the rate of photoexcitation is greater than that of thermal excitation, the linear solution to the band transport model no longer applies. In this case the charge density and the space-charge field are independent of the intensity and dependent only on the size of the beam waist.

© 1992 Optical Society of America

History
Original Manuscript: October 25, 1991
Revised Manuscript: March 30, 1992
Published: October 1, 1992

Citation
C. Xu, D. Statman, and J. K. McIver, "Effects of a single optical beam on photorefractive materials: steady-state solution," J. Opt. Soc. Am. B 9, 1825-1831 (1992)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-9-10-1825

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