Patent ID: 6990285

Claim:
A method of making at least one hole through an optically transparent body, said method comprising: providing an ultrashort pulse laser for producing a laser output with a wavelength λ, said laser output having a subpicosecond laser pulse duration; providing a laser output focusing lens for focusing said laser output, said focusing lens having a numerical aperture NA; providing an optically transparent body, optically transparent body having a transparency at λ of at least 90%/cm; providing a liquid filled container situated proximate to at least a portion of said optically transparent body, such that said optically transparent body is in direct contact with said liquid; and directing said laser output through said focusing lens to produce a focused laser output with a subpicosecond laser pulse duration proximate said optically transparent body, said focused laser output tracing at least one hole track pattern through said transparent glass body while said optically transparent body and said focused laser output move relative to one another in X-Y-Z directions; wherein said at least one hole track pattern is in contact with said liquid and wherein said focused laser output in conjunction with said liquid create at least one hole in said optically transparent body.