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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 7 — Apr. 1, 2014
  • pp: 2164–2167

Direct holographic imaging of ultrafast laser damage process in thin films

Nerijus Šiaulys, Laurent Gallais, and Andrius Melninkaitis  »View Author Affiliations


Optics Letters, Vol. 39, Issue 7, pp. 2164-2167 (2014)
http://dx.doi.org/10.1364/OL.39.002164


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Abstract

Dynamic process of femtosecond laser-induced damage formation in dielectric thin films is reconstructed from a series of time-resolved images. Ta2O5 single-layer coatings of four different thicknesses have been investigated in transmission mode by means of time-resolved off-axis digital holography. Different processes overlapped in time were found to occur; namely, the Kerr effect, free-electron generation, ultrafast lattice heating, and shockwave generation. The trends in contribution of these effects are qualitatively reproduced by numerical models based on electron-rate equations and Drude theory, which take into account transient changes in the films and interference effects of the pump and probe pulses.

© 2014 Optical Society of America

OCIS Codes
(140.3330) Lasers and laser optics : Laser damage
(310.0310) Thin films : Thin films
(100.0118) Image processing : Imaging ultrafast phenomena
(090.1995) Holography : Digital holography

ToC Category:
Lasers and Laser Optics

History
Original Manuscript: January 2, 2014
Revised Manuscript: March 4, 2014
Manuscript Accepted: March 11, 2014
Published: March 31, 2014

Citation
Nerijus Šiaulys, Laurent Gallais, and Andrius Melninkaitis, "Direct holographic imaging of ultrafast laser damage process in thin films," Opt. Lett. 39, 2164-2167 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-7-2164

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