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AssigneeIntellectual Property Development Associates of Connecticut, Inc.
InventorNabil M. Lawandy
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A method for preparing a material so as to exhibit second harmonic generan 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.
A method of preparing a material so as to exhibit second harmonic generation for optical radiation incident on the material, comprising the steps of:
An optical device comprising:
An optical device for frequency doubling optical radiation, said device comprising a bulk glass comprised of substitutionally doped silica and a charge transfer dopant, the bulk glass being 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 value of conversion efficiency of the first wavelength into the second wavelength.
A laser rod formed from a bulk glass comprised of substitutionally doped silica and a charge transfer dopant for generating coherent radiation having a first wavelength and a second wavelength that is one half of the first wavelength.
A method of preparing a laser material so as to exhibit second harmonic generation, comprising the steps of:
A laser having an optical cavity bounded by a first mirror and by a second mirror, the laser including within the optical cavity a lasant material that includes a bulk glass comprised of substitutionally doped silica and a charge transfer dopant for generating coherent radiation having a first wavelength and a second wavelength that is one half of the first wavelength.
A method of preparing a material so as to exhibit second harmonic generation for optical radiation incident on the material, comprising the steps of:
Dependencies are inferred from the claim text.