Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Making named article
Reexamination Certificate
2005-12-20
2005-12-20
Thornton, Yvette C. (Department: 1752)
Radiation imagery chemistry: process, composition, or product th
Imaging affecting physical property of radiation sensitive...
Making named article
C430S322000, C430S945000
Reexamination Certificate
active
06977137
ABSTRACT:
The invention relates to methods of writing a light-guiding structure in a bulk glass substrate. The bulk glass substrate is preferably made from a soft silica-based material having an annealing point less than about 1380° K. A pulsed laser beam is focused within the substrate while the focus is translated relative to the substrate along a scan path at a scan speed effective to induce an increase in the refractive index of the material along the scan path. Substantially no laser-induced physical damage of the material is incurred along the scan path. Various optical devices can be made using this method.
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Borrelli Nicholas F.
Schroeder Joseph F.
Smith Charlene M.
Streltsov Alexander
Bean Gregory V.
Corning Incorporated
Suggs James V.
Thornton Yvette C.
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