Fabrication of mitigation pits for improving laser damage resistance in dielectric mirrors by femtosecond laser machining
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.
- OSTI ID:
- 22036611
- Journal Information:
- Applied Optics, Journal Name: Applied Optics Journal Issue: 9 Vol. 50; ISSN APOPAI; ISSN 0003-6935
- Country of Publication:
- United States
- Language:
- English
Similar Records
Laser damage resistant pits in dielectric coatings created by femtosecond laser machining
Morphologies of laser-induced damage in hafnia-silica multilayer mirror and polarizer coatings
Searching for optimal mitigation geometries for laser resistant multilayer high reflector coatings
Conference
·
Mon Nov 02 23:00:00 EST 2009
·
OSTI ID:968164
Morphologies of laser-induced damage in hafnia-silica multilayer mirror and polarizer coatings
Conference
·
Thu Aug 01 00:00:00 EDT 1996
·
OSTI ID:461389
Searching for optimal mitigation geometries for laser resistant multilayer high reflector coatings
Journal Article
·
Thu Feb 10 23:00:00 EST 2011
· Applied Optics
·
OSTI ID:1030210