Patent ID: 6151343
Filing Date: 2000-11-21
Classification: H01S

Abstract:
A method for driving a diode-pumped solid-state laser, comprising the steps of:determining a measurement signal for a control circuit as an actual value of light power emitted by the solid-state laser;determining a control deviation by comparing the measurement signal with a predetermined light power target value;converting the determined control deviation into a driver current for a laser diode used as a pump diode for a resonator of the solid-state laser;filtering out higher-frequency components of the measurement signal for damping of corresponding higher-frequency disturbances of the light power, and supplying the filtered out components in an additional control circuit having a bandwidth corresponding to the higher-frequency disturbances;by use of said additional control circuit, controlling a portion of the driver current supplied to the laser diode dependent on the filtered-out higher-frequency components of the measurement signal; andmaking the portion of the driver current which is controlled dependent on the higher-frequency components of the measurement signal 0.5 to 50% of the driver current.