Coherent light generators – Particular active media – Active media with particular shape
Patent
1988-06-29
1990-05-01
Sikes, William L.
Coherent light generators
Particular active media
Active media with particular shape
372 15, 372 68, 372 70, 372 72, 372 93, H01S 306
Patent
active
049225022
ABSTRACT:
In a solid-state laser device comprising a slab-shaped laser medium, first through n-th excitation units are arranged on the slab-shaped laser medium to define first through n-th partial zones and to generate first through n-th laser beams from the first through n-th partial zones along optical axes, respectively. In order to selectively energize the first through n-th excitation units, a reference light beam is previously generated by a beam generator to be delivered through a fixed mirror and a beam distributor to a selected one of the first through n-th partial zones. Thereafter, the reference light beam travels through the slected partial zone to be received by a photosensor. The photosensor detects the selected partial zone to energize a selected one of the first through n-th excitation units that is made to correspond to the selected partial zone. The selected partial zone is excited by the selected excitation unit to generate a selected one of the first through n-th laser beams that is produced through the fixed mirror as the output laser beam. The beam distributor may comprise a rotatable prismal block and first through n-th reflectors which are selectively confronted with the first through n-th partial zones during rotation of the prismal block. Alternatively, first through n-th reflectors may be attached to a support pole.
REFERENCES:
patent: 3310753 (1967-03-01), Burkhalter
patent: 3311844 (1967-03-01), Di Curcio
patent: 3541468 (1970-11-01), Hammond, Jr. et al.
patent: 3621456 (1971-11-01), Young
Sekiguchi Hiroshi
Unternahrer Josef F.
Holloway B. R. R.
Hoya Corporation
Sikes William L.
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