Laser damage resistant pits in dielectric coatings created by femtosecond laser machining
Replacing growing damage sites with benign, laser damage resistant features in multilayer dielectric films may enable large mirrors to be operated at significantly higher fluences. Laser damage resistant features have been created in high reflecting coatings on glass substrates using femtosecond laser machining. These prototype features have been damage tested to over 40 J/cm{sup 2} (1064nm, 3ns pulselength) and have been shown not to damage upon repeated irradiation at 40J/cm{sup 2}. Further work to optimize feature shape and laser machining parameters is ongoing.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 968164
- Report Number(s):
- LLNL-PROC-420294; TRN: US200924%%323
- Resource Relation:
- Journal Volume: 7504; Conference: Presented at: Boulder Damage Symposium, Boulder, CO, United States, Sep 21 - Sep 23, 2009
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fabrication of mitigation pits for improving laser damage resistance in dielectric mirrors by femtosecond laser machining
The surface morphology of as-deposited and laser-damaged dielectric mirror coatings studied in situ by atomic force microscopy
Laser-induced damage of hafnia coatings as a function of pulse duration in the femtosecond to nanosecond range
Journal Article
·
Sun Mar 20 00:00:00 EDT 2011
· Applied Optics
·
OSTI ID:968164
The surface morphology of as-deposited and laser-damaged dielectric mirror coatings studied in situ by atomic force microscopy
Conference
·
Wed Jul 24 00:00:00 EDT 1991
·
OSTI ID:968164
+1 more
Laser-induced damage of hafnia coatings as a function of pulse duration in the femtosecond to nanosecond range
Journal Article
·
Sun Mar 20 00:00:00 EDT 2011
· Applied Optics
·
OSTI ID:968164
+5 more