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A non-intrusive beam power monitor for high power pulsed or continuous wave lasers
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.
Date:
May 29, 1991
Creator:
Hawsey, R. A. & Scudiere, M. B.
System:
The UNT Digital Library
Linear electric field mass spectrometry
A mass spectrometer is described having a low weight and low power requirement, for use in space. It can be used to analyze the ionized particles in the region of the spacecraft on which it is mounted. High mass resolution measurements are made by timing ions moving through a gridless cylindrically sysmetric linear electric field.
Date:
March 29, 1991
Creator:
McComas, D. J. & Nordholt, J. E.
System:
The UNT Digital Library
A non-intrusive beam power monitor for high power pulsed or continuous wave lasers
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.
Date:
May 29, 1991
Creator:
Hawsey, R. A. & Scudiere, M. B.
System:
The UNT Digital Library