A method of making an at least one hole in an optically transparent body comprises
the following steps: (i) providing an ultrashort pulse laser for producing a laser
output with a wavelength , the laser output having a subpicosecond laser
pulse duration; (ii) providing a laser output focusing lens for focusing the laser
output, the focusing lens having a numerical aperture NA; (iii) providing an optically
transparent body, the optically transparent body having a transparency at
of at least 90%/cm; (iv) providing a liquid filled container situated proximate
to the optically transparent body, such that the optically transparent body is
in direct contact with the liquid; and (v) directing the laser output through the
focusing lens to produce a focused laser output with a subpicosecond laser pulse
duration proximate the optically transparent body, wherein the focused laser output
traces at least one hole track pattern through the transparent glass body while
the optically transparent body and said focused laser output move relative to one
another in X-Y-Z directions. The at least one hole track pattern is in contact
with the liquid and the focused laser output, in conjunction with the liquid, creates
at least one hole in the optically transparent body.