Method and apparatus for monitoring the power of a laser beam

Details Method and apparatus for monitoring the power of a laser beam Method and apparatus for monitoring the power of a laser beam

1994-05-02

1996-02-06

Scott, Jr., Leon

Coherent light generators

Optical fiber laser

372 23, 372 32, 372 29, H01S 330

Patent

active

054901570

ABSTRACT:
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.

REFERENCES:
patent: 4860295 (1989-08-01), Byer et al.
patent: 5025448 (1991-06-01), Sudo et al.
patent: 5117436 (1992-05-01), Hanson
patent: 5181210 (1993-01-01), Chung et al.
patent: 5323409 (1994-06-01), Laskoskie et al.
Journal of the Optical Society of America--vol. 64, No. 6--Jun. 1974 "Scattering from side-illuminated clad glass fibers for determination of fiber parameters" L. S. Watkins--pp. 767-772.

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