Nano-indentation and laser-induced damage testing in optical multilayer-dielectric gratings [Nanomechanics and laser-induced damage in optical multilayer dielectric gratings]
Abstract
Here, we demonstrate how a nanomechanical test can be used to generate metrics to complement laser-induced–damage testing (LIDT) measurements and show that differences in optical performance of the gratings (arising from changes in cleaning process and/or fabrication methods) can be related to their mechanical reliability. Data are presented on LIDT measurements in diffractive gratings of silica deposited on optical multilayers. The nano-indentation response of the diffraction gratings is measured in a new mode that allows for the extraction of a measurable metric characterizing the brittleness of the gratings, as well as their ductility. We show that lower LIDT’s are positively correlated with an increased grating brittleness, and therefore identify a nanomechanical approach to describe LIDT’s. We present extensive numerical simulations of nano-indentation tests and identify different deformation modes including stretching, shear concentration, and bending as precursors to mechanical failure in the nano-indentation test. The effects of geometrical inhomogeneities on enhanced stress generation in these gratings are specifically examined and addressed.
- Authors:
-
- Univ. of Rochester, Rochester, NY (United States)
- (United States)
- Publication Date:
- Research Org.:
- Univ. of 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:
- 1357217
- Alternate Identifier(s):
- OSTI ID: 1346875
- Report Number(s):
- 2016-3, 1337
Journal ID: ISSN 0003-6935; APOPAI; 2016-3, 1337, 2291
- Grant/Contract Number:
- NA0001944
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Applied Optics
- Additional Journal Information:
- Journal Volume: 56; Journal Issue: 9; Journal ID: ISSN 0003-6935
- Publisher:
- Optical Society of America (OSA)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; 36 MATERIALS SCIENCE; diffraction gratings; silica; laser materials processing; other properties
Citation Formats
Mehrotra, K., Corning Research & Development Corp., Coming, NY, Taylor, B. N., Kozlov, A. A., Papernov, S., and Lambropoulos, J. C. Nano-indentation and laser-induced damage testing in optical multilayer-dielectric gratings [Nanomechanics and laser-induced damage in optical multilayer dielectric gratings]. United States: N. p., 2017.
Web. doi:10.1364/AO.56.002494.
Mehrotra, K., Corning Research & Development Corp., Coming, NY, Taylor, B. N., Kozlov, A. A., Papernov, S., & Lambropoulos, J. C. Nano-indentation and laser-induced damage testing in optical multilayer-dielectric gratings [Nanomechanics and laser-induced damage in optical multilayer dielectric gratings]. United States. https://doi.org/10.1364/AO.56.002494
Mehrotra, K., Corning Research & Development Corp., Coming, NY, Taylor, B. N., Kozlov, A. A., Papernov, S., and Lambropoulos, J. C. Thu .
"Nano-indentation and laser-induced damage testing in optical multilayer-dielectric gratings [Nanomechanics and laser-induced damage in optical multilayer dielectric gratings]". United States. https://doi.org/10.1364/AO.56.002494. https://www.osti.gov/servlets/purl/1357217.
@article{osti_1357217,
title = {Nano-indentation and laser-induced damage testing in optical multilayer-dielectric gratings [Nanomechanics and laser-induced damage in optical multilayer dielectric gratings]},
author = {Mehrotra, K. and Corning Research & Development Corp., Coming, NY and Taylor, B. N. and Kozlov, A. A. and Papernov, S. and Lambropoulos, J. C.},
abstractNote = {Here, we demonstrate how a nanomechanical test can be used to generate metrics to complement laser-induced–damage testing (LIDT) measurements and show that differences in optical performance of the gratings (arising from changes in cleaning process and/or fabrication methods) can be related to their mechanical reliability. Data are presented on LIDT measurements in diffractive gratings of silica deposited on optical multilayers. The nano-indentation response of the diffraction gratings is measured in a new mode that allows for the extraction of a measurable metric characterizing the brittleness of the gratings, as well as their ductility. We show that lower LIDT’s are positively correlated with an increased grating brittleness, and therefore identify a nanomechanical approach to describe LIDT’s. We present extensive numerical simulations of nano-indentation tests and identify different deformation modes including stretching, shear concentration, and bending as precursors to mechanical failure in the nano-indentation test. The effects of geometrical inhomogeneities on enhanced stress generation in these gratings are specifically examined and addressed.},
doi = {10.1364/AO.56.002494},
journal = {Applied Optics},
number = 9,
volume = 56,
place = {United States},
year = {Thu Mar 16 00:00:00 EDT 2017},
month = {Thu Mar 16 00:00:00 EDT 2017}
}
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