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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 19, Iss. 1 — Jan. 1, 2002
  • pp: 54–62

Surface structure and second-order nonlinear optical properties of thermally poled WO3–TeO2 glasses doped with Na+

Aiko Narazaki, Katsuhisa Tanaka, and Kazuyuki Hirao  »View Author Affiliations


JOSA B, Vol. 19, Issue 1, pp. 54-62 (2002)
http://dx.doi.org/10.1364/JOSAB.19.000054


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Abstract

Surface structure and relaxation phenomena have been investigated for thermally poled 20WO3·80TeO2 glass, which is known to show a large second-order nonlinear susceptibility. X-ray photoelectron spectroscopy reveals that the penetration of Na+ into the anode-side surface of 20WO3·80TeO2 glass occurred during poling, since the poling was performed with the 20WO3·80TeO2 glass sandwiched in between two commercial borosilicate glasses containing Na+. The agreement between dependence of second-harmonic intensity on etched thickness at anode-side surface and the concentration profile of Na+ suggests that the penetration of Na+ predominantly contributes to the second-harmonic generation. The decay of second-harmonic intensity at room temperature is describable in terms of the single exponential function except for the glass poled at higher temperature, for which the stretched exponential function is applicable. The activation energy for the decay of second-harmonic intensity of the glass poled at 260 °C is 47 kJ·mol-1. This value presumably corresponds to the diffusion of Na+ ions.

© 2002 Optical Society of America

OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(160.4330) Materials : Nonlinear optical materials
(190.4160) Nonlinear optics : Multiharmonic generation
(190.4400) Nonlinear optics : Nonlinear optics, materials
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter

Citation
Aiko Narazaki, Katsuhisa Tanaka, and Kazuyuki Hirao, "Surface structure and second-order nonlinear optical properties of thermally poled WO3–TeO2 glasses doped with Na+," J. Opt. Soc. Am. B 19, 54-62 (2002)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-19-1-54

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