Oscillators – Molecular or particle resonant type
Patent
1978-01-03
1979-10-09
Sikes, William L.
Oscillators
Molecular or particle resonant type
331 945P, H01S 3045
Patent
active
041707630
ABSTRACT:
An improved conductively cooled laser pumping assembly comprises a metallic housing having an elliptically shaped bore in which a pump lamp and laser rod are supported along the respective focal axes of the bore. The laser rod is mounted on the tapered end of a conductively cooled metal body by resilient strap means at opposite ends of the rod and with a relatively low melting temperature solder between the body and the rod to enhance thermal contact with the rod and to accommodate the different thermal expansions of the rod and body, thereby minimizing rod strain. The elliptical bore is coated with a heat absorbing substance and contains a similarly shaped one-piece snugly fitting removable glass liner or shell. The shell has removable glass or quartz end plates backed by heat absorbing shims and both the shell and end plates have a dielectric reflective-transmissive coating on their external surfaces for reflecting pump light toward the laser rod while transmitting radiation having unwanted wavelengths to the adjacent conductively cooled housing. The shell and end plates are resiliently axially biased as a unit within the housing to limit relative movement of these parts.
REFERENCES:
hahn et al., Dielectric Cavity Raises YAG Efficiency, Electro-optical Systems Design, (Feb. 1975), pp. 11-14.
Radecki, Lamp-Pumped Engineering Feasibility Model Laser Subsystem, Digest of Technical Papers, 1975, IEEE/OSA Conference on Laser Engineering and Applications, May 28-30, 1975.
Chadwick Curt H.
Radecki Dan J.
GTE Sylvania Incorporated
Lawler John F.
Sikes William L.
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