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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 48, Iss. 18 — Jun. 20, 2009
  • pp: 3429–3437

Directly photoinscribed refractive index change and Bragg gratings in Ohara WMS-15 glass ceramic

Peter A. Krug, Rodica Matei Rogojan, and Jacques Albert  »View Author Affiliations


Applied Optics, Vol. 48, Issue 18, pp. 3429-3437 (2009)
http://dx.doi.org/10.1364/AO.48.003429


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Abstract

We inscribed thick volume gratings in WMS-15 glass ceramic by ultraviolet light at 193 and 248 nm . Unlike earlier work in ceramic materials, the inscription process modified the optical properties of the material without the need for any additional chemical or thermal processing. Experimental evidence from measurements of grating growth, thermal annealing, and spectral absorption indicates that two distinct physical mechanisms are responsible for the grating formation. Weak, easily thermally bleached gratings resulted from exposure fluences below 0.3 kJ / cm 2 . Optical absorption measurements suggest that these low fluence gratings are predominantly absorption gratings. More thermally stable gratings, found to be refractive index gratings with unsaturated refractive index modulation amplitude as large as 6 × 10 5 were formed at cumulative fluences of 1 kJ / cm 2 and above.

© 2009 Optical Society of America

OCIS Codes
(050.7330) Diffraction and gratings : Volume gratings
(160.2750) Materials : Glass and other amorphous materials
(230.1480) Optical devices : Bragg reflectors
(160.5335) Materials : Photosensitive materials

ToC Category:
Diffraction and Gratings

History
Original Manuscript: January 12, 2009
Revised Manuscript: May 15, 2009
Manuscript Accepted: May 16, 2009
Published: June 11, 2009

Citation
Peter A. Krug, Rodica Matei Rogojan, and Jacques Albert, "Directly photoinscribed refractive index change and Bragg gratings in Ohara WMS-15 glass ceramic," Appl. Opt. 48, 3429-3437 (2009)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-48-18-3429

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