Electric heating – Metal heating – By arc
Reexamination Certificate
2005-04-26
2005-04-26
Heinrich, Samuel M. (Department: 1725)
Electric heating
Metal heating
By arc
C219S121750
Reexamination Certificate
active
06884960
ABSTRACT:
The present invention relates to a method for writing an optical structure within a workpiece of a dielectric material using FLDM. In a first embodiment system parameters for the FLDM are determined in dependence upon the dielectric material, a predetermined volume element and a predetermined change of the refractive index of the dielectric material within the predetermined volume element. The system parameters are determined such that self-focusing of a pulsed femtosecond laser beam is inhibted by non-linear absorption of the energy of the pulsed femtosecond laser beam within the dielectric material. A pulsed femtosecond laser beam based on the determined system parameters is focused at a predetermined location within the workpiece for inducing a change of the refractive index through dielectric modification within the predetermined volume element, the volume element including the focus. Various embodiments enable writing of various different optical structures into a workpiece.
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Bourne Orson
Corkum Paul
Mehendale Manjusha
Naumov Andrei Yu
Rayner David
Freedman & Associates
Heinrich Samuel M.
National Research Council of Canada
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