04839497 is referenced by 33 patents and cites 9 patents.

An apparatus and method for drilling holes in printed wiring boards formed of a plurality materials wherein two or more laser beams are combined along a common path and preferably focussed on the desired drilling site. The wavelengths of the lasers are selected such that they are each rapidly absorbed and therefor vaporized at least one of said materials. The laser beams are preferably focussed by a beam combining mirror. The lasers can be controlled to provide simultaneous or sequential emission of the laser beams.

Title
Drilling apparatus and method
Application Number
7/92558
Publication Number
4839497
Application Date
September 3, 1987
Publication Date
June 13, 1989
Inventor
George A Zahaykevich
Watertown
MA, US
Victor T Pileeki
Townsend
MA, US
Nott G Sankar
Andover
MA, US
Agent
Kenyon & Kenyon
Assignee
Advanced Laser Systems
MA, US
Digital Equipment Corporation
MA, US
IPC
B23K 26/00
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