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AssigneeIntellectual Property Development Associates of Connecticut, Inc.
InventorNabil M. Lawandy
Estimating the term…
A method for preparing a material so as to exhibit second harmonic generation for optical radiation that passes through the material. The method includes a first step of providing a bulk glass comprised of substitutionally doped silica and a charge transfer dopant. The bulk glass is prepared for frequency doubling in accordance with a method that includes a step of irradiating the bulk glass with optical radiation having a first wavelength and a second wavelength, the bulk glass being irradiated for a period of time sufficient to obtain a desired amount of conversion efficiency of the first wavelength into the second wavelength. The silica is substitutionally doped with an element selected from the group consisting of Ge and Al, and the charge transfer dopant is selected from the group consisting of Ce.sup.3+, Nd.sup.3+, and Eu.sup.2+. In another embodiment of the invention the silica is substitutionally doped with Ge and the charge transfer dopant is comprised of naturally existing Ge defects. The bulk glass may be provided as a monolithic body, a preform, a coating, a layer, or as a film. Optical devices incorporating a bulk glass SHG converter and self-frequency doubling glass lasers are described.
An optical device for frequency doubling optical radiation, said device having an input for receiving electromagnetic radiation having a first wavelength and an output for outputting electromagnetic radiation that includes electromagnetic radiation having a second wavelength that is one half of the first wavelength, said device including a bulk SiO.sub.2 glass that includes a charge transfer dopant, said bulk SiO.sub.2 glass being interposed between said input and said output.
A source of electromagnetic radiation, comprising:
An optical data storage readout system, said system comprising a source of electromagnetic radiation for illuminating a storage media having information recorded thereon, said source including first converting means for converting electrical energy into electromagnetic radiation, said electromagnetic radiation including a first wavelength, said first converting means having at least one output force for outputting said electromagnetic radiation, said source further including second converting means, optically coupled to said output, for converting at least a portion of said electromagnetic radiation into electromagnetic radiation having a second wavelength that is one half of the first wavelength, said second converting means being comprised of substitutionally doped silica that includes a charge transfer dopant.
Dependencies are inferred from the claim text.