Method and apparatus for treating material with a laser

Details Method and apparatus for treating material with a laser Method and apparatus for treating material with a laser

1994-07-14

1997-02-11

Evans, Geoffrey S.

Electric heating

Metal heating

By arc

21912185, 21912186, B23K 2612, B23K 2614

Patent

active

056017383

ABSTRACT:
A method and apparatus for reducing unwanted pressure changes generated during treatment of a target material in a liquid-filled space with a laser. A pilot pulse is generated to produce a gas bubble in a region of the liquid-filled space before a processing pulse is directed through the region and onto the target material. An impulse spacing between the pilot pulse and the processing pulse is optimized by detecting an oscillation period of the gas bubble. The pilot pulse and processing pulse may be generated by the same or separate laser sources and directed toward the target material by the same or separate conductors, respectively.

REFERENCES:
patent: 4799755 (1989-01-01), Jones
patent: 4906812 (1990-03-01), Nied et al.
patent: 4939336 (1990-07-01), Meyer et al.
patent: 5246436 (1993-09-01), Rowe
patent: 5254112 (1993-10-01), Sinofsky et al.
patent: 5321715 (1994-06-01), Trost

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