Tandem laser assembly

Details Tandem laser assembly Tandem laser assembly

1976-04-27

1977-12-27

Sikes, William L.

Oscillators

Molecular or particle resonant type

H01S 322

Patent

active

040657310

ABSTRACT:
A laser system which produces multiline emissions simultaneously and which is adapted for use in optical data processing systems. In particular, in a first embodiment, a unitary positive column laser comprises two sections, the first section comprising a positive column helium-cadmium laser, the second section comprising a positive column helium-neon laser, the first and second sections being in tandem. Each section may be excited separately such that optimum excitation for red laser light, produced by the helium-neon section, and blue laser light, produced by the helium-cadmium section, can be independently controlled. The present system also allows separate cadmium vapor pressure control by separately controlling the vaporization temperature of the cadmium and also allows confinement of the cadmium vapor whereby the vapor does not contaminate one of the optical windows which confines the active laser medium. By proper selection of the optical cavity parameters, simultaneous red and blue laser oscillations can be obtained for application in any optical data processing system that requires a red and blue laser radiation source. In a second embodiment, the helium-cadmium section is replaced by with a helium-selenium section whereby the tandem laser system is capable of producing multiline laser radiation in the red, blue and green colors.

REFERENCES:
patent: 3516009 (1970-06-01), Lipsett
patent: 3624548 (1971-11-01), Sosnowski
Ahmed et al., He-Ne-Cd Laser with Two Color Output. Proc., IEEE (Nov. 1969) pp. 2084 and 2085.

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