Method of drilling ultrafine channels through glass

Details Method of drilling ultrafine channels through glass Method of drilling ultrafine channels through glass

1981-09-14

1984-04-03

Albritton, C. L.

Electric heating

Metal heating

By arc

219121LF, B23K 2700

Patent

active

044410085

ABSTRACT:
A method is disclosed for generating ultrafine channels through and between opposed surfaces of a thin glass body by preheating the glass body to 500.degree.-1040.degree. F., and directing a beam of laser energy having a wavelength of at least about 10.6 microns along a fixed axis at the preheated body and against one of the surfaces for a period sufficient to melt and vaporize the portion of the glass in the path of the beam. The beam is defocused relative to said one surface and pulsed.

REFERENCES:
patent: 3601576 (1971-08-01), Schlafli et al.
patent: 3742182 (1973-06-01), Saunders

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