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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 17, Iss. 4 — Apr. 1, 2000
  • pp: 548–554

Ultraviolet irradiation effect on the third-order optical nonlinearity of CuCl-microcrystallite-doped glass

Yuki Kondo, Yutaka Kuroiwa, Naoki Sugimoto, Tsuneo Manabe, Setsuro Ito, Toshinobu Yoko, and Arao Nakamura  »View Author Affiliations


JOSA B, Vol. 17, Issue 4, pp. 548-554 (2000)
http://dx.doi.org/10.1364/JOSAB.17.000548


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Abstract

We investigate the effect of irradiation by a UV pulse laser on the third-order optical nonlinearity of CuCl-microcrystallite-doped glass as a function of the irradiation’s shot number, energy density per pulse, and wavelength. The response time τ is estimated from the luminescence decay time of the CuCl excitons. The absolute value of the third-order nonlinear susceptibility χ(3) is measured by degenerate four-wave mixing. Values of both τ and χ(3) decrease after UV irradiation. The figure of merit for the optical nonlinearity, χ(3)/ατ, where α is the absorption coefficient, is almost constant before and after UV irradiation and is approximately 500 esu cm s−1 in the case of 8-nm CuCl microcrystallites. This value is 1 order of magnitude larger than that of CdSxSe1−x-microcrystallite-doped glasses. The mechanism by which τ and χ(3) are decreased is discussed, considering defects levels formed at the interface between CuCl microcrystallites and glass matrix.

© 2000 Optical Society of America

OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(160.4330) Materials : Nonlinear optical materials
(160.4760) Materials : Optical properties
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter
(350.3450) Other areas of optics : Laser-induced chemistry

Citation
Yuki Kondo, Yutaka Kuroiwa, Naoki Sugimoto, Tsuneo Manabe, Setsuro Ito, Toshinobu Yoko, and Arao Nakamura, "Ultraviolet irradiation effect on the third-order optical nonlinearity of CuCl-microcrystallite-doped glass," J. Opt. Soc. Am. B 17, 548-554 (2000)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-17-4-548

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