Coherent light generators – Particular pumping means – Pumping with optical or radiant energy
Patent
1989-10-10
1990-11-06
Davie, James W.
Coherent light generators
Particular pumping means
Pumping with optical or radiant energy
372 35, 372 75, H01S 3094
Patent
active
049691554
ABSTRACT:
Laser apparatus comprising an integrating cavity, at least one lens and a heat sink arrangement that provides for a more uniform stored energy distribution, higher energy transfer efficiency and relaxed temperature control requirements. The laser apparatus incorporates a laser rod enclosed within a cavity. The cavity includes optically transparent heat sink means contiguous with and surrounding the laser rod. At least one laser diode array is disposed in a spaced relationship with respect to the axis of the rod. At least one lens is disposed between the diode array and the rod. The lens has a focal length and is disposed to focus light from the laser diode array onto the rod. The cavity is surrounded by reflective surfaces and is provided with at least one elongated aperture therethrough for passing light from the diode array into the interior of the reflecting cavity and onto the rod. The reflective surfaces reflect unabsorbed light passed through the rod for multiple passes through the laser rod.
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Davie James W.
Denson-Low Wanda K.
Hughes Aircraft Company
Streeter William J.
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