Coherent light generators – Particular pumping means – Pumping with optical or radiant energy
Patent
1987-08-31
1989-06-13
Sikes, William L.
Coherent light generators
Particular pumping means
Pumping with optical or radiant energy
372 33, 372 72, H01S 3091
Patent
active
048399027
ABSTRACT:
The efficiency of an optically pumped solid state laser is substantially improved with a controlled geometry fluorescent converter between the pump light source and the lasing medium. Fluorescent materials have the capability of absorbing broadband pumping radiation, shifting it in wavelength and re-emitting it in the absorption band of the selected solid state laser medium. Use of angular formations having the converter surface facing the laser medium reduces fluorescent light trapping within the converter due to internal reflection thereby greatly increasing the total light output of the converter and thus the efficiency of the laser.
REFERENCES:
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patent: 4262206 (1981-04-01), Viehmann
patent: 4371897 (1983-02-01), Kramer
patent: 4412332 (1983-10-01), Knight et al.
patent: 4490615 (1984-12-01), Riihimaki et al.
Han et al; "A Spectrum Converter Dye for Enhancement of Blue-Green Laser Efficiency"; J. Appl. Phys. 60(10), Nov. 15, 1986; pp. 3414-3416.
Guch, Jr., "Parasitic Suppression in Large Aperture Disk Lasers Employing Liquid Edge Claddings"; Jun. 1976./vol. 15, No. 6/Applied Optics, pp. 1453-1457.
Gilbert Douglas M.
GTE Government Systems Corporation
Lawler John F.
Randolph B.
Sikes William L.
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