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Title: Optical absorption measurement system

The system of the present invention contemplates a non-intrusive method for measuring the temperature rise of optical elements under high laser power optical loading to determine the absorption coefficient. The method comprises irradiating the optical element with a high average power laser beam, viewing the optical element with an infrared camera to determine the temperature across the optical element and calculating the absorption of the optical element from the temperature.
Authors:
 [1] ;  [2] ;  [3] ;  [1]
  1. (Livermore, CA)
  2. (San Diego, CA)
  3. (Pleasanton, CA)
Publication Date:
OSTI Identifier:
867114
Report Number(s):
US 4868768
Resource Type:
Patent
Research Org:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
Country of Publication:
United States
Language:
English
Subject:
optical; absorption; measurement; contemplates; non-intrusive; method; measuring; temperature; rise; optical; elements; laser; power; optical; loading; determine; absorption; coefficient; method; comprises; irradiating; optical; element; average; power; laser; beam; viewing; optical; element; infrared; camera; determine; temperature; optical; element; calculating; absorption; optical; element; temperature; optical absorption; optical element; optical element; optical element; optical element; optical element; optical elements; method comprises; laser beam; average power; power laser; absorption coefficient; laser power; method comprise; comprises irradiating; temperature rise; absorption measurement; power optical /702/250/356/