Gas laser tube with mask

Details Gas laser tube with mask Gas laser tube with mask

1990-02-27

1991-09-24

Scott, Jr., Leon

Coherent light generators

Particular resonant cavity

Specified cavity component

372 99, 372107, 372108, H01S 308

Patent

active

050520148

ABSTRACT:
The gas laser tube has a cap-shaped mask attached to the outer surface of an output mirror portion. The mask has an aperture or a window on the bottom thereof to pass a laser beam therethrough. The mask can be rotated around the laser optical axis. The center position of the aperture is located so as to deviate from the rotational center of the mask. Therefore, even when the laser output optical axis is deviated from the rotational center of the mask, the laser beam may easily be adjusted to position within the aperture simply by rotating the mask.

REFERENCES:
patent: 4569053 (1986-02-01), Roullard, III et al.
patent: 4890296 (1989-12-01), Crosby

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