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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 6, Iss. 4 — Apr. 1, 1989
  • pp: 606–615

Formation, decay, and erasure of photorefractive gratings written in barium titanate by picosecond pulses

Arthur L. Smirl, K. Bohnert, George C. Valley, Ruth Ann Mullen, and Thomas F. Boggess  »View Author Affiliations


JOSA B, Vol. 6, Issue 4, pp. 606-615 (1989)
http://dx.doi.org/10.1364/JOSAB.6.000606


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Abstract

Photorefractive gratings are written, read out, and erased with single 30-psec pulses at fluences of 1–15 mJ/cm2 and a wavelength of 0.532 μm in a BaTiO3 crystal. The gratings consist of one component that is fully formed 50 psec after the peak in the writing beams and a second component that grows for approximately 30 sec until it starts to decay by dark erasure. The photorefractive index change per absorbed photon for picosecond pulses is approximately the same as that obtained when a cw beam at 0.515 μm is used with the same crystal. The index change is approximately a factor of 30 smaller than that observed at the same fluence in GaAs at 1.06 μm when the same picosecond laser system is used.

© 1989 Optical Society of America

History
Original Manuscript: October 28, 1988
Manuscript Accepted: December 30, 1988
Published: April 1, 1989

Citation
Arthur L. Smirl, George C. Valley, Ruth Ann Mullen, K. Bohnert, and Thomas F. Boggess, "Formation, decay, and erasure of photorefractive gratings written in barium titanate by picosecond pulses," J. Opt. Soc. Am. B 6, 606-615 (1989)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-6-4-606

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