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Method and apparatus for monitoring the power of a laser beam

Patent ·
OSTI ID:870285
 [1];  [2]
  1. San Ramon, CA
  2. Livermore, CA
+ Show Author Affiliations
A method for monitoring the power of a laser beam in real time is disclosed. At least one optical fiber is placed through the laser beam, where a portion of light from the laser beam is coupled into the optical fiber. The optical fiber may be maintained in a stationary position or moved periodically over a cross section of the laser beam to couple light from each area traversed. Light reaching both fiber ends is monitored according to frequency and processed to determine the power of the laser beam.
Research Organization:
Lawrence Livermore National Laboratory (LLNL), Livermore, CA
DOE Contract Number:
W-7405-ENG-48
Assignee:
United States of Americas as represented by United States (Washington, DC)
Patent Number(s):
US 5490157
OSTI ID:
870285
Country of Publication:
United States
Language:
English

References (1)

Scattering from side-illuminated clad glass fibers for determination of fiber parameters journal January 1974

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