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The lasing characteristics of a Ti:Sapphire laser with a frequency selector is measured. The selector consists of a transmission grating and a mirror. The laser was longitudinally pumped by a ashlamp pumped, Q-switched, frequency-doubled Nd:YAG laser. The rst-order di racted beam from a transmission grating with a 600-lines/mm groove density was send back to the gain medium by the full mirror. The lasing bandwidth of the pulsed Ti:Sapphire laser without the selector was 24.3 nm, which was reduced to 0.31 nm by using the selector. The wavelength was tuned by rotating the mirror. The conversion eciency and the temporal pro le were calculated by using a set of rate equations. The calculated lasing characteristics as functions of the di raction loss in the grating described the experimental results well.


The lasing characteristics of a Ti:Sapphire laser with a frequency selector is measured. The selector consists of a transmission grating and a mirror. The laser was longitudinally pumped by a ashlamp pumped, Q-switched, frequency-doubled Nd:YAG laser. The rst-order di racted beam from a transmission grating with a 600-lines/mm groove density was send back to the gain medium by the full mirror. The lasing bandwidth of the pulsed Ti:Sapphire laser without the selector was 24.3 nm, which was reduced to 0.31 nm by using the selector. The wavelength was tuned by rotating the mirror. The conversion eciency and the temporal pro le were calculated by using a set of rate equations. The calculated lasing characteristics as functions of the di raction loss in the grating described the experimental results well.