Optics: measuring and testing – Photometers – Photoelectric
Patent
1991-05-29
1993-02-02
Rosenberger, Richard A.
Optics: measuring and testing
Photometers
Photoelectric
250205, 372 31, G01J 142, H01S 313
Patent
active
051841894
ABSTRACT:
A system and method for monitoring the output of a laser is provided in which the output of a photodiode disposed in the cavity of the laser is used to provide a correlated indication of the laser power. The photodiode is disposed out of the laser beam to view the extraneous light generated in the laser cavity whose intensity has been found to be a direct correlation of the laser beam output power level. Further, the system provides means for monitoring the phase of the laser output beam relative to a modulated control signal through the photodiode monitor.
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Hawsey Robert A.
Scudiere Matthew B.
Breeden David E.
Hamel Stephen D.
Moser William R.
Pham Hoa Q.
Rosenberger Richard A.
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