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Title: Fabrication of mitigation pits for improving laser damage resistance in dielectric mirrors by femtosecond laser machining

Abstract

Femtosecond laser machining is used to create mitigation pits to stabilize nanosecond laser-induced damage in multilayer dielectric mirror coatings on BK7 substrates. In this paper, we characterize features and the artifacts associated with mitigation pits and further investigate the impact of pulse energy and pulse duration on pit quality and damage resistance. Our results show that these mitigation features can double the fluence-handling capability of large-aperture optical multilayer mirror coatings and further demonstrate that femtosecond laser macromachining is a promising means for fabricating mitigation geometry in multilayer coatings to increase mirror performance under high-power laser irradiation.

Authors:
; ;
Publication Date:
OSTI Identifier:
22036611
Resource Type:
Journal Article
Journal Name:
Applied Optics
Additional Journal Information:
Journal Volume: 50; Journal Issue: 9; Other Information: (c) 2011 Optical Society of America; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6935
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE; APERTURES; COATINGS; DAMAGE; DIELECTRIC MATERIALS; FABRICATION; LASER BEAM MACHINING; LASER RADIATION; LAYERS; MIRRORS; MITIGATION; PERFORMANCE; PULSES; SPECTROSCOPY; SUBSTRATES

Citation Formats

Wolfe, Justin E, Qiu, S Roger, and Stolz, Christopher J. Fabrication of mitigation pits for improving laser damage resistance in dielectric mirrors by femtosecond laser machining. United States: N. p., 2011. Web. doi:10.1364/AO.50.00C457.
Wolfe, Justin E, Qiu, S Roger, & Stolz, Christopher J. Fabrication of mitigation pits for improving laser damage resistance in dielectric mirrors by femtosecond laser machining. United States. https://doi.org/10.1364/AO.50.00C457
Wolfe, Justin E, Qiu, S Roger, and Stolz, Christopher J. 2011. "Fabrication of mitigation pits for improving laser damage resistance in dielectric mirrors by femtosecond laser machining". United States. https://doi.org/10.1364/AO.50.00C457.
@article{osti_22036611,
title = {Fabrication of mitigation pits for improving laser damage resistance in dielectric mirrors by femtosecond laser machining},
author = {Wolfe, Justin E and Qiu, S Roger and Stolz, Christopher J},
abstractNote = {Femtosecond laser machining is used to create mitigation pits to stabilize nanosecond laser-induced damage in multilayer dielectric mirror coatings on BK7 substrates. In this paper, we characterize features and the artifacts associated with mitigation pits and further investigate the impact of pulse energy and pulse duration on pit quality and damage resistance. Our results show that these mitigation features can double the fluence-handling capability of large-aperture optical multilayer mirror coatings and further demonstrate that femtosecond laser macromachining is a promising means for fabricating mitigation geometry in multilayer coatings to increase mirror performance under high-power laser irradiation.},
doi = {10.1364/AO.50.00C457},
url = {https://www.osti.gov/biblio/22036611}, journal = {Applied Optics},
issn = {0003-6935},
number = 9,
volume = 50,
place = {United States},
year = {Sun Mar 20 00:00:00 EDT 2011},
month = {Sun Mar 20 00:00:00 EDT 2011}
}