초록 ▼

A laser system includes two separate active laser-resonators. A first of the laser-resonators delivers laser-radiation at a first wavelength, and the second generates fundamental laser-radiation at second wavelength. The second resonator includes an optically-nonlinear crystal. The radiation deliver

A laser system includes two separate active laser-resonators. A first of the laser-resonators delivers laser-radiation at a first wavelength, and the second generates fundamental laser-radiation at second wavelength. The second resonator includes an optically-nonlinear crystal. The radiation delivered by the first laser-resonator is mixed in the optically-nonlinear crystal with the fundamental radiation circulating in the second resonator thereby generating radiation having the sum frequency of the first and second wavelengths. In one example, an OPS-laser-resonator having a fundamental wavelength of 976 nm includes a CLBO crystal. 244 nm radiation from an intracavity-frequency-doubled 488 nm argon-ion laser is mixed in the CLBO with the 976 nm radiation to provide 195 nm radiation.

대표청구항 ▼

[What is claimed is:] [1.]first and second active laser-resonators, said first active laser-resonator delivering laser-radiation at a first wavelength, and said second-active laser-resonator arranged to generate and oscillate fundamental laser-radiation therein having a second wavelength, said secon

[What is claimed is:] [1.]first and second active laser-resonators, said first active laser-resonator delivering laser-radiation at a first wavelength, and said second-active laser-resonator arranged to generate and oscillate fundamental laser-radiation therein having a second wavelength, said second laser-resonator including an optically-nonlinear crystal of CLBO;said first and second laser-resonators and said optically-nonlinear crystal cooperatively arranged such that first-wavelength radiation delivered by said first laser-resonator enters said optically-nonlinear crystal without passing through any other component of said second laser-resonator at an angle to said second wavelength radiation and follows a common path with said second-wavelength radiation through said optically-nonlinear crystal, whereby said first-wavelength radiation is mixed in said optically-nonlinear crystal with said second-wavelength radiation oscillating in said second laser-resonator, thereby generating radiation having a third wavelength corresponding to the sum frequency of said first and second wavelengths; andwherein said third-wavelength radiation is delivered from said optically nonlinear crystal as output radiation of the laser system without passing through any other component of said second laser-resonator.