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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 12 — Jun. 16, 2014
  • pp: 15298–15304

Role of ion migrations in ultrafast laser written tellurite glass waveguides

T. Toney Fernandez, M. Hernandez, B. Sotillo, S. M. Eaton, G. Jose, R. Osellame, A. Jha, P. Fernandez, and J. Solis  »View Author Affiliations

Optics Express, Vol. 22, Issue 12, pp. 15298-15304 (2014)

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We report on a strong cross migration of ions in a Tellurite (Te) based glass to form waveguides using a high repetition rate femtosecond laser. The tellurite glass matrix was modified using oxides of P, Na and Zn elements of which Te and Na ions play an important role to form waveguides upon laser irradiation. Tellurium was observed to migrate causing a positive index change zone whereas sodium cross migrates to the tellurium deficient zone forming a relatively low index change region. We have used micro-Raman analysis to scan across the waveguide cross-section to understand the state of the glass network and the relation between ion migration and glass densification for waveguiding. We have found that there is an increase in TeO3 units and reduction of TeO4 units in the Te rich zones enabling densification. This work will help guide the new commercial glass manufacturing industries that aim at producing mid-infrared transparent glasses like tellurite, tellurides and chalcogenides for the production of waveguide based devices.

© 2014 Optical Society of America

OCIS Codes
(130.3120) Integrated optics : Integrated optics devices
(140.3390) Lasers and laser optics : Laser materials processing
(160.2750) Materials : Glass and other amorphous materials
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
(130.2755) Integrated optics : Glass waveguides

ToC Category:
Laser Microfabrication

Original Manuscript: April 14, 2014
Revised Manuscript: May 30, 2014
Manuscript Accepted: May 30, 2014
Published: June 13, 2014

T. Toney Fernandez, M. Hernandez, B. Sotillo, S. M. Eaton, G. Jose, R. Osellame, A. Jha, P. Fernandez, and J. Solis, "Role of ion migrations in ultrafast laser written tellurite glass waveguides," Opt. Express 22, 15298-15304 (2014)

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