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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 5 — Mar. 1, 2012
  • pp: 860–862

Origin of thermally induced second harmonic generation in PbOB2O3 glasses

Qiming Liu and Jincheng Du  »View Author Affiliations


Optics Letters, Vol. 37, Issue 5, pp. 860-862 (2012)
http://dx.doi.org/10.1364/OL.37.000860


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Abstract

Optical second harmonic generation (SHG) with second-order nonlinearity χ(2) as high as 2.1pm/V has been achieved in water quenched PbOB2O3 glasses. No nonlinear depletion layer or microcrystals were observed in these glasses and the mechanism for nonlinearity has been explored in this Letter. Our results show that the possible mechanism for SHG in these glasses can be attributed to their low thermal conductivity that led to a large surface stress gradient, which broke the inversion symmetry of the glasses and subsequently induced the nonlinear effect. These findings suggest that low thermal conductivity induced high stress gradients to lead to large SHG.

© 2012 Optical Society of America

OCIS Codes
(160.2750) Materials : Glass and other amorphous materials
(160.4330) Materials : Nonlinear optical materials
(130.4815) Integrated optics : Optical switching devices

ToC Category:
Integrated Optics

History
Original Manuscript: November 29, 2011
Revised Manuscript: January 15, 2012
Manuscript Accepted: January 17, 2012
Published: February 24, 2012

Citation
Qiming Liu and Jincheng Du, "Origin of thermally induced second harmonic generation in PbO–B2O3 glasses," Opt. Lett. 37, 860-862 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-5-860


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