Method and apparatus for material processing with the aid of a l

Details Method and apparatus for material processing with the aid of a l Method and apparatus for material processing with the aid of a l

1988-10-03

1990-07-03

Albritton, C. L.

Electric heating

Metal heating

By arc

21912183, 606 7, B23K 2600

Patent

active

049393367

ABSTRACT:
In a method and an apparatus for material processing with the aid of a laser the laser light is directed via a laser optical system onto the material and the light reemitted or scattered back by the material is conducted via the laser optical system onto a detector arrangement which is followed by an evaluating circuit for controlling the laser. The amplitude-versus-time profile of the light incident on the detector arrangement is evaluated and used to control the laser and/or an optical switch arranged in the output beam path of the laser.

REFERENCES:
patent: 4443684 (1984-04-01), Sakuragi et al.
patent: 4504727 (1985-03-01), Melcher et al.
patent: 4682594 (1987-07-01), Mok
patent: 4720621 (1988-01-01), Langen
Teng et al., Optical Studies of Pulsed-Laser . . . , Appl. Phys. B, 42 (1987), pp. 73-78.

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