Femtosecond pulse damage behavior of oxide dielectric thin films

Mark Mero; Jianhua Liu; Joachim Zeller; Wolfgang G. Rudolph; Kai Starke; Detlev Ristau

doi:10.1117/12.524571

10 June 2004 Femtosecond pulse damage behavior of oxide dielectric thin films

Mark Mero, Jianhua Liu, Joachim Zeller, Wolfgang G. Rudolph, Kai Starke, Detlev Ristau

Proceedings Volume 5273, Laser-Induced Damage in Optical Materials: 2003; (2004) https://doi.org/10.1117/12.524571
Event: XXXV Annual Symposium on Optical Materials for High Power Lasers: Boulder Damage Symposium, 2003, Boulder, Colorado, United States

Abstract

Pulse duration and band-gap scaling of the laser breakdown threshold fluence of oxide dielectrics were measured using various (TiO₂, Ta₂O₅, HfO₂, Al₂O₃, and SiO₂) single layer thin films. The observed scaling with pulse duration was explained by an empirical model including multi-photon and avalanche ionization, and conduction band electron decay. The results suggest the formation of self-trapped excitons on a sub-ps time-scale, which can cause significant energy transfer to the lattice. At constant pulse duration, the band-gap scaling was found to be approximately linear. This linear scaling can be explained by the Keldysh photo-ionization theory and avalanche ionization in the flux-doubling approximation.

Citation Download Citation

Mark Mero, Jianhua Liu, Joachim Zeller, Wolfgang G. Rudolph, Kai Starke, and Detlev Ristau "Femtosecond pulse damage behavior of oxide dielectric thin films", Proc. SPIE 5273, Laser-Induced Damage in Optical Materials: 2003, (10 June 2004); https://doi.org/10.1117/12.524571

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available