Laser-induced damage in dielectrics with nanosecond to spupicosecond pulses I: experimental

Brent C. Stuart; Steve M. Herman; Michael D. Perry

doi:10.1117/12.213772

14 July 1995 Laser-induced damage in dielectrics with nanosecond to spupicosecond pulses I: experimental

Brent C. Stuart, Steve M. Herman, Michael D. Perry

Proceedings Volume 2428, Laser-Induced Damage in Optical Materials: 1994; (1995) https://doi.org/10.1117/12.213772
Event: Laser-Induced Damage in Optical Materials: 1994, 1994, Boulder, CO, United States

Abstract

We report extensive laser-induced damage threshold measurements on pure and multilayer dielectrics at 1053 and 526 nm for pulse durations, (tau) , ranging from 140 fs to 1 ns. Qualitative differences in the morphology of damage and a departure from the diffusion-dominated (tau) ^1/2 scaling indicate that damage results from plasma formation and ablation for (tau) <EQ10 ps and from conventional melting and boiling for (tau) >50 ps. A theoretical model based on electron production via multiphoton ionization, Joule heating, and collisional (avalanche) ionization is in good agreement with both the pulsewidth and wavelength scaling experimental results.

Citation Download Citation

Brent C. Stuart, Steve M. Herman, and Michael D. Perry "Laser-induced damage in dielectrics with nanosecond to spupicosecond pulses I: experimental", Proc. SPIE 2428, Laser-Induced Damage in Optical Materials: 1994, (14 July 1995); https://doi.org/10.1117/12.213772

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