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Title: Measurement of optical scattered power from laser-induced shallow pits on silica

Journal Article · · Applied Optics
DOI:https://doi.org/10.1364/AO.54.008554· OSTI ID:1242003
 [1];  [1];  [1]
  1. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
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We describe a model for far-field scattered power and irradiance by a silica glass slab with a shallow-pitted exit surface and is experimentally validated. The comparison to the model is performed using a precisely micromachined ensemble of ~11 μm wide laser ablated shallow pits producing 1% of the incident beam scatter in a 10 mrad angle. This series of samples with damage initiations and laser-induced shallow pits resulting from 351 nm, 5 ns pulsed laser cleaning of metal microparticles at different fluences between 2 J/cm2 and 11 J/cm2 are characterized as well and found in good agreement with model predictions.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC52-07NA27344; 14-ERD-098
OSTI ID:
1242003
Alternate ID(s):
OSTI ID: 1222422
Report Number(s):
LLNL-JRNL-673988; APOPAI
Journal Information:
Applied Optics, Vol. 54, Issue 28; ISSN 0003-6935
Publisher:
Optical Society of America (OSA)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 13 works
Citation information provided by
Web of Science

References (10)

Characterization of laser induced damage sites in optical components journal January 2002
Initiation of laser-induced damage sites in fused silica optical components journal January 2009
HF-Based Etching Processes for Improving Laser Damage Resistance of Fused Silica Optical Surfaces: HF-Based Etching Processes for Improving Laser Damage Resistance journal October 2010
An improved method of mitigating laser-induced surface damage growth in fused silica using a rastered pulsed CO 2 laser
  • Bass, Isaac L.; Guss, Gabriel M.; Nostrand, Michael J.
  • Laser Damage Symposium XLII: Annual Symposium on Optical Materials for High Power Lasers, SPIE Proceedings https://doi.org/10.1117/12.867862
conference November 2010
Micro-Shaping, Polishing, and Damage Repair of Fused Silica Surfaces Using Focused Infrared Laser Beams: Micro-Shaping, Polishing, and Damage Repair of Fused Silica Surfaces … journal November 2014
Light scattering from laser induced pit ensembles on high power laser optics journal January 2015
Phase modulation and morphological evolution associated with surface-bound particle ablation journal January 2013
Long range nanostructuring of silicon surfaces by photonic nanojets from microsphere Langmuir films journal March 2013
Polarization of light scattered by microrough surfaces and subsurface defects journal January 1999
A large-aperture high-energy laser system for optics and optical component testing
  • Nostrand, Mike C.; Weiland, Timothy L.; Luthi, Ronald L.
  • XXXV Annual Symposium on Optical Materials for High Power Lasers: Boulder Damage Symposium, SPIE Proceedings https://doi.org/10.1117/12.528327
conference June 2004

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Related Subjects

42 ENGINEERING
71 CLASSICAL AND QUANTUMM MECHANICS
GENERAL PHYSICS