Patent ID: 6526073
Filing Date: 2003-02-25
Classification: G02F,H01S

Abstract:
A laser system, comprising:first and second active laser-resonators, said first active laser-resonator having an optically-nonlinear crystal therein and being arranged to generate fundamental-radiation having a first wavelength and circulate said fundamental-radiation therein through said optically-nonlinear crystal in one direction only and said second laser-resonator arranged to deliver radiation having a second wavelength; and said first and second laser-resonators and said optically-nonlinear crystal cooperatively arranged such that second-wavelength radiation delivered by said second laser-resonator propagates through said optically-nonlinear crystal in the same direction as said first-wavelength radiation and is mixed in said optically-nonlinear crystal with said first-wavelength radiation, thereby generating radiation having a third wavelength corresponding to the sum frequency of said first and second wavelengths.