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Title: Interaction of short laser pulses with model contamination microparticles on a high reflector

Abstract

The response of model contamination particles located on the surface of a multilayer dielectric mirror when exposed to 1053 nm laser pulses of 10 ps or 0.6 ps duration is investigated. Four different particle types were studied: stainless steel, borosilicate glass, polyethylene, and polytetrafluoroethylene, all having an average diameter of about 40 μm. Irradiation with one laser pulse caused particles to eject from the surface with an onset fluence in the range 5× to 100×, depending on the particle type, below the particle-free, laser-induced damage threshold of the mirror. Morphological analysis showed, however, that the ejection process always generated ablation craters and/or secondary contamination, both of which can degrade the performance of the optic during subsequent pulses. Here, ejection and damage mechanisms are discussed for each particle type.

Authors:
ORCiD logo [1];  [1]
  1. Univ. of Rochester, Rochester, NY (United States). Lab for Laser Energetics
Publication Date:
Research Org.:
Univ. of Rochester, Rochester, NY (United States). Lab for Laser Energetics
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
Contributing Org.:
Laboratory for Laser Energetics, University of Rochester
OSTI Identifier:
1506684
Alternate Identifier(s):
OSTI ID: 1503936
Report Number(s):
2018-328, 1489
Journal ID: ISSN 0146-9592; OPLEDP; 2018-328, 1489, 2448
Grant/Contract Number:  
NA0003856
Resource Type:
Accepted Manuscript
Journal Name:
Optics Letters
Additional Journal Information:
Journal Volume: 44; Journal Issue: 7; Journal ID: ISSN 0146-9592
Publisher:
Optical Society of America (OSA)
Country of Publication:
United States
Language:
English
Subject:
47 OTHER INSTRUMENTATION

Citation Formats

Kafka, K. R. P., and Demos, S. G. Interaction of short laser pulses with model contamination microparticles on a high reflector. United States: N. p., 2019. Web. doi:10.1364/ol.44.001844.
Kafka, K. R. P., & Demos, S. G. Interaction of short laser pulses with model contamination microparticles on a high reflector. United States. doi:10.1364/ol.44.001844.
Kafka, K. R. P., and Demos, S. G. Mon . "Interaction of short laser pulses with model contamination microparticles on a high reflector". United States. doi:10.1364/ol.44.001844. https://www.osti.gov/servlets/purl/1506684.
@article{osti_1506684,
title = {Interaction of short laser pulses with model contamination microparticles on a high reflector},
author = {Kafka, K. R. P. and Demos, S. G.},
abstractNote = {The response of model contamination particles located on the surface of a multilayer dielectric mirror when exposed to 1053 nm laser pulses of 10 ps or 0.6 ps duration is investigated. Four different particle types were studied: stainless steel, borosilicate glass, polyethylene, and polytetrafluoroethylene, all having an average diameter of about 40 μm. Irradiation with one laser pulse caused particles to eject from the surface with an onset fluence in the range 5× to 100×, depending on the particle type, below the particle-free, laser-induced damage threshold of the mirror. Morphological analysis showed, however, that the ejection process always generated ablation craters and/or secondary contamination, both of which can degrade the performance of the optic during subsequent pulses. Here, ejection and damage mechanisms are discussed for each particle type.},
doi = {10.1364/ol.44.001844},
journal = {Optics Letters},
number = 7,
volume = 44,
place = {United States},
year = {2019},
month = {4}
}

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