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Optical Materials Express

Optical Materials Express

  • Editor: David J. Hagan
  • Vol. 2, Iss. 12 — Dec. 1, 2012
  • pp: 1751–1759

Time resolved measurements of gratings photo-induced by femtosecond pulses in a lead doped glass

S. Chouli and E. Freysz  »View Author Affiliations


Optical Materials Express, Vol. 2, Issue 12, pp. 1751-1759 (2012)
http://dx.doi.org/10.1364/OME.2.001751


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Abstract

We report on the formation of gratings photo-induced by femtosecond laser pulses in SF59 glass. Depending on the number of pulses used to excite the sample and the pump power density, transient or permanent gratings are induced. We demonstrate that the grating formation is not instantaneous and is produced by laser-induced defects. This results in a change of both the real and imaginary part of the index of refraction. A simple set-up that records the temporal evolution of both parameters during the laser excitation is also presented. It makes it possible to evaluate the weight of both contributions to the grating diffraction efficiency.

© 2012 OSA

OCIS Codes
(140.3390) Lasers and laser optics : Laser materials processing
(140.3440) Lasers and laser optics : Laser-induced breakdown
(160.2750) Materials : Glass and other amorphous materials
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

ToC Category:
Laser Materials Processing

History
Original Manuscript: September 11, 2012
Revised Manuscript: October 22, 2012
Manuscript Accepted: November 6, 2012
Published: November 8, 2012

Citation
S. Chouli and E. Freysz, "Time resolved measurements of gratings photo-induced by femtosecond pulses in a lead doped glass," Opt. Mater. Express 2, 1751-1759 (2012)
http://www.opticsinfobase.org/ome/abstract.cfm?URI=ome-2-12-1751


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References

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