Laser processing apparatus with beam mode control

Details Laser processing apparatus with beam mode control Laser processing apparatus with beam mode control

1994-01-14

1996-10-29

Bovernick, Rodney B.

Coherent light generators

Particular beam control device

Mode discrimination

372 38, H01S 3098

Patent

active

055703844

ABSTRACT:
A laser processing apparatus which makes it possible to select a laser beam mode always optimally suited to processing of a workpiece on the basis of a change in the focusing characteristic of each mode and the amount of movement of the beam's focal point with respect to a change in a laser output value. The laser processing apparatus includes a laser oscillator capable of changing the beam mode of its laser beam, and a processing table, all controlled by a controller which operates to change the beam mode of the oscillator in correspondence with a laser output during processing.

REFERENCES:
patent: 4859015 (1989-08-01), Krinsky et al.
patent: 5142543 (1992-08-01), Wakabayashi et al.
Hishii et al., "High performance compact 5kW CO.sub.2 Laser for Industrial Use", ICALEO '87 (Nov. 1987), pp. 109-115.
"Laser Processing Technology", Nikkan Kogyo Shimbun, Ltd., p. 19. Published Jan. 28, 1985.
SPIE--"Laser Beam Diagnostics", The International Society for Optical Engineering, vol. 1414, (1991), pp. 21-32. Published Jan. 21-22, 1991.

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