H - Electricity – 01 – S
Patent
H - Electricity
01
S
345/37
H01S 3/23 (2006.01) H01S 3/03 (2006.01) H01S 3/032 (2006.01) H01S 3/104 (2006.01)
Patent
CA 1080838
MULTILINE EMISSION INTEGRAL MIRROR LASER ABSTRACT OF THE DISCLOSURE An integral mirror type 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 coaxially aligned and having different inner diameters. Simul- taneous excitation in the two different sections provides optimum excitation for red laser light, produced by the helium- neon section and blue laser light produced by the helium-neon- cadmium section. The present system also allows separate cadmium vapor pressure control by separately controlling the varporization temperature of the cadmium and also allows con- finement 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 oscilla- tions 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. -1/2-
274324
Hug William F.
Wang Shing C.
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