Method and system for processing optical materials for high power laser systems
Abstract
A method of determining conditioning pulse parameters for an optical element includes directing a pump pulse to impinge on the optical element and directing a probe pulse to impinge on the optical element. The method also includes determining a first time associated with an onset of electronic excitation leading to formation of an absorbing region of the optical element and determining a second time associated with expansion of the absorbing region of the optical element. The method further includes defining a turn-off time for a conditioning pulse between the first time and the second time. According to embodiments of the present invention, pulse shaping of the conditioning pulse enables laser conditioning of optical elements to achieve improvements in their laser induced damage threshold.
- Inventors:
- Publication Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1169102
- Patent Number(s):
- 8,945,440
- Application Number:
- 13/240,980
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA)
- DOE Contract Number:
- AC52-07NA27344
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Demos, Stavros G, Raman, Rajesh, and Negres, Raluca A. Method and system for processing optical materials for high power laser systems. United States: N. p., 2015.
Web.
Demos, Stavros G, Raman, Rajesh, & Negres, Raluca A. Method and system for processing optical materials for high power laser systems. United States.
Demos, Stavros G, Raman, Rajesh, and Negres, Raluca A. 2015.
"Method and system for processing optical materials for high power laser systems". United States. https://www.osti.gov/servlets/purl/1169102.
@article{osti_1169102,
title = {Method and system for processing optical materials for high power laser systems},
author = {Demos, Stavros G and Raman, Rajesh and Negres, Raluca A},
abstractNote = {A method of determining conditioning pulse parameters for an optical element includes directing a pump pulse to impinge on the optical element and directing a probe pulse to impinge on the optical element. The method also includes determining a first time associated with an onset of electronic excitation leading to formation of an absorbing region of the optical element and determining a second time associated with expansion of the absorbing region of the optical element. The method further includes defining a turn-off time for a conditioning pulse between the first time and the second time. According to embodiments of the present invention, pulse shaping of the conditioning pulse enables laser conditioning of optical elements to achieve improvements in their laser induced damage threshold.},
doi = {},
url = {https://www.osti.gov/biblio/1169102},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Feb 03 00:00:00 EST 2015},
month = {Tue Feb 03 00:00:00 EST 2015}
}
Works referenced in this record:
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Combined advanced finishing and UV laser conditioning process for producing damage resistant optics
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- Menapace, Joseph Arthur; Peterson, John E.; Penetrante, Bernardino M.
- US Patent Document 6,920,765
Time-resolved microscope system to image material response following localized laser energy deposition: exit surface damage in fused silica as a case example
journal, January 2011
- Raman, Rajesh N.
- Optical Engineering, Vol. 50, Issue 1
Kinetics of ejected particles during breakdown in fused silica by nanosecond laser pulses
journal, January 2011
- Raman, Rajesh N.; Negres, Raluca A.; Demos, Stavros G.
- Applied Physics Letters, Vol. 98, Issue 5
Role of phase instabilities in the early response of bulk fused silica during laser-induced breakdown
journal, August 2011
- DeMange, P.; Negres, R. A.; Raman, R. N.
- Physical Review B, Vol. 84, Issue 5