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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 6 — Feb. 20, 1999
  • pp: 1053–1057

Annealing to reduce scattering centers in Czochralski-grown β-BaB2O4

Hikaru Kouta and Yasuhiko Kuwano  »View Author Affiliations


Applied Optics, Vol. 38, Issue 6, pp. 1053-1057 (1999)
http://dx.doi.org/10.1364/AO.38.001053


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Abstract

When a visible laser beam passes through β-BaB2O4 (BBO), scattered light can be observed along the beam within the crystal. Scattering centers caused by structural defects in Czochralski-grown BBO can be reduced by 95% by annealing at 920 °C. In the flux-grown BBO, centers actually increase by the same annealing because the process causes microcracks and/or secondary inclusions. It is shown that annealed Czochralski-grown BBO is superior to flux-grown BBO (annealed or as-grown) in terms of optical loss.

© 1999 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(160.4330) Materials : Nonlinear optical materials
(290.5870) Scattering : Scattering, Rayleigh

History
Original Manuscript: July 20, 1998
Revised Manuscript: October 21, 1998
Published: February 20, 1999

Citation
Hikaru Kouta and Yasuhiko Kuwano, "Annealing to reduce scattering centers in Czochralski-grown β-BaB2O4," Appl. Opt. 38, 1053-1057 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-6-1053

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