Laser cutting apparatus

Details Laser cutting apparatus Laser cutting apparatus

1981-02-18

1983-04-19

Albritton, C. L.

Electric heating

Metal heating

By arc

219121LD, 219121LQ, B23K 2700

Patent

active

043806945

ABSTRACT:
Laser cutting apparatus comprises a laser (20), means (24,25) for directing the output beam of the laser on to a workpiece (26), and means such as a quarter-wave plate (27) for producing circular polarization of the laser output beam. The laser may include within its optical cavity an element which produces stable linear polarization of the output beam. The quarter-wave plate (27) then covers the polarization into circular polarization.

REFERENCES:
patent: 3388314 (1968-06-01), Gould
patent: 3430158 (1969-02-01), Fox et al.
patent: 3754195 (1973-08-01), Johnston, Jr. et al.
patent: 4069458 (1978-01-01), Farcy et al.
patent: 4116542 (1978-09-01), Moncar et al.
patent: 4139263 (1979-02-01), Lehureau et al.

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