Abstract

We demonstrate how a nanomechanical test identifies areas of mechanical field concentration as being comparable to areas where optical fields are known to be concentrated, in the special context of laser-induced damage testing (LIDT) of 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 LIDTs are positively correlated with an increased grating brittleness, and therefore identify a nanomechanical approach to describe LIDTs. 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, and we show the agreement between nanomechanical testing and analytical interpretation of these inhomogeneities.

© 2017 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Simulation of internal stress waves generated by laser-induced damage in multilayer dielectric gratings

S. M. Gracewski, S. Boylan, J. C. Lambropoulos, J. B. Oliver, T. J. Kessler, and S. G. Demos
Opt. Express 26(14) 18412-18422 (2018)

Improving the performance of high-laser-damage-threshold, multilayer dielectric pulse-compression gratings through low-temperature chemical cleaning

Heather P. Howard, Anthony F. Aiello, Justin G. Dressler, Nicholas R. Edwards, Terrance J. Kessler, Alexei A. Kozlov, Ian R. T. Manwaring, Kenneth L. Marshall, James B. Oliver, Semyon Papernov, Amy L. Rigatti, Alycia N. Roux, Ansgar W. Schmid, Nicholas P. Slaney, Christopher C. Smith, Brittany N. Taylor, and Stephen D. Jacobs
Appl. Opt. 52(8) 1682-1692 (2013)

Effect of electric field on laser induced damage threshold of multilayer dielectric gratings

J. Neauport, E. Lavastre, G. Razé, G. Dupuy, N. Bonod, M. Balas, G. de Villele, J. Flamand, S. Kaladgew, and F. Desserouer
Opt. Express 15(19) 12508-12522 (2007)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (12)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Tables (2)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription