OSA's Digital Library

Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry van Driel
  • Vol. 29, Iss. 10 — Oct. 1, 2012
  • pp: 2665–2668

Correlation of the refractive index change at the surface and inside phosphate glass upon femtosecond laser irradiation

Daniel Puerto, Jan Siegel, Andres Ferrer, Javier Hernandez-Rueda, and Javier Solis  »View Author Affiliations


JOSA B, Vol. 29, Issue 10, pp. 2665-2668 (2012)
http://dx.doi.org/10.1364/JOSAB.29.002665


View Full Text Article

Enhanced HTML    Acrobat PDF (711 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

A study of the surface modification induced by single femtosecond laser pulses in phosphate glass has revealed surface swelling at fluences just below the ablation threshold. This behavior is different from that observed in other dielectric materials. Optical micrographs obtained with monochromatic light show a pattern of Newton rings within the swollen region whose number scales inversely with the illumination wavelength, acting as a micro Fabry–Perot etalon. The swollen surface layer has lower refractive index than the bulk glass and can reach a maximum thickness of 820 nm. We relate these findings to results obtained during subsurface waveguide writing inside phosphate glass, which also show a refractive index decrease at energies near threshold for waveguide fabrication. We have identified low density free-electron plasma to be the trigger of the refractive index change.

© 2012 Optical Society of America

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
(350.5400) Other areas of optics : Plasmas

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: May 31, 2012
Revised Manuscript: July 26, 2012
Manuscript Accepted: July 27, 2012
Published: September 6, 2012

Citation
Daniel Puerto, Jan Siegel, Andres Ferrer, Javier Hernandez-Rueda, and Javier Solis, "Correlation of the refractive index change at the surface and inside phosphate glass upon femtosecond laser irradiation," J. Opt. Soc. Am. B 29, 2665-2668 (2012)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-29-10-2665

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited