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Title: 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:
; ;
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1169102
Patent Number(s):
8945440
Application Number:
13/240,980
Assignee:
Lawrence Livermore National Security, LLC (Livermore, CA)
Patent Classifications (CPCs):
G - PHYSICS G01 - MEASURING G01N - INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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. Tue . "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 = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {2}
}

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Works referenced in this record:

Kinetics of ejected particles during breakdown in fused silica by nanosecond laser pulses
journal, January 2011


Role of phase instabilities in the early response of bulk fused silica during laser-induced breakdown
journal, August 2011