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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 20 — Oct. 15, 2012
  • pp: 4329–4331

Role of two-photon absorption in Ta2O5 thin films in nanosecond laser-induced damage

Lars Jensen, Mathias Mende, Stefan Schrameyer, Marco Jupé, and Detlev Ristau  »View Author Affiliations


Optics Letters, Vol. 37, Issue 20, pp. 4329-4331 (2012)
http://dx.doi.org/10.1364/OL.37.004329


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Abstract

Laser-induced damage in the nanosecond domain has been connected to the heating and breakdown of local defects within the thin film and the various interfaces. Within the femtosecond regime, the damaging events can be traced back to multiphoton-based excitation into the conduction band. When critical electron density is exceeded, an optical breakdown will occur. In this Letter we report on evidence that two-photon absorption also significantly triggers laser-induced damage in Ta 2 O 5 thin films at 532 nm and 8 ns pulse duration. For experimental verification, single layers of Ta 2 O 5 / SiO 2 mixtures have been analyzed.

© 2012 Optical Society of America

OCIS Codes
(140.3330) Lasers and laser optics : Laser damage
(310.6870) Thin films : Thin films, other properties

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: August 6, 2012
Manuscript Accepted: September 8, 2012
Published: October 12, 2012

Citation
Lars Jensen, Mathias Mende, Stefan Schrameyer, Marco Jupé, and Detlev Ristau, "Role of two-photon absorption in Ta2O5 thin films in nanosecond laser-induced damage," Opt. Lett. 37, 4329-4331 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-20-4329


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