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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Glenn D. Boreman
  • Vol. 44, Iss. 33 — Nov. 20, 2005
  • pp: 7173–7180

Measurement of thermally induced changes in the refractive index of glass caused by laser processing

James Sullivan, Jian Zhao, and Ted D. Bennett  »View Author Affiliations


Applied Optics, Vol. 44, Issue 33, pp. 7173-7180 (2005)
http://dx.doi.org/10.1364/AO.44.007173


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Abstract

The effects of CO2 laser heating of pure fused silica are investigated. Studies show that the laser heating process causes a small volume of glass to be left in an altered microstructural state. To measure the refractive index of this altered region, a process was developed to create a thin film of altered glass. Samples were measured with a prism coupler, and a theoretical model was developed to predict the intensity values collected during the measurement. A least-squares routine was used to determine the refractive index that results in the best fit between the experimental and predicted intensity data. The refractive index in the altered glass was found to increase by approximately 0.07%.

© 2005 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(160.4760) Materials : Optical properties
(160.6030) Materials : Silica

ToC Category:
Materials

Citation
James Sullivan, Jian Zhao, and Ted D. Bennett, "Measurement of thermally induced changes in the refractive index of glass caused by laser processing," Appl. Opt. 44, 7173-7180 (2005)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-44-33-7173


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