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Proceedings Paper

Few-cycle pulse laser-induced damage of thin films in air and vacuum ambience
Author(s): Kyle R. P. Kafka; Noah Talisa; Gabriel Tempea; Drake R. Austin; Catalin Neacsu; Enam A. Chowdhury
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Paper Abstract

Laser-induced damage mechanisms were investigated for an ultra-broadband chirped mirror, as part of a systematic study of few-cycle pulse laser-induced damage threshold (LIDT) of widely-used ultra-broadband optics, in vacuum and in air, for single and multi-pulse regimes (S-on-1). Microscopic analysis of damage morphology suggests that three different damage mechanisms occur across the fluence range 0.15-0.4J/cm2, while no ablation was yet observed. The three regimes resulted in shallow swelling (< 10 nm tall), tall blistering (~ 150 nm tall), and annular blistering (damage suppressed at highest intensity, forming a ring shape). Descriptions of the potential mechanisms are discussed.

Paper Details

Date Published: 6 December 2016
PDF: 8 pages
Proc. SPIE 10014, Laser-Induced Damage in Optical Materials 2016, 100140D (6 December 2016); doi: 10.1117/12.2245179
Show Author Affiliations
Kyle R. P. Kafka, The Ohio State Univ. (United States)
Noah Talisa, The Ohio State Univ. (United States)
Gabriel Tempea, Spectra-Physics (Austria)
Drake R. Austin, The Ohio State Univ. (United States)
Catalin Neacsu, Spectra-Physics (Austria)
Enam A. Chowdhury, The Ohio State Univ. (United States)

Published in SPIE Proceedings Vol. 10014:
Laser-Induced Damage in Optical Materials 2016
Greg J. Exarhos; Vitaly E. Gruzdev; Joseph A. Menapace; Detlev Ristau; MJ Soileau, Editor(s)

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