Abstract

Widely tunable subnanosecond Ti:sapphire laser radiation pumped with a cw Q-switched laser-diode-pumped Nd:YAG laser has been demonstrated in a simple laser system with a configuration of variable cavity length. Laser wavelengths can be continuously tuned by adjustment of the rf of an intracavity acousto-optic tunable filter with a computer through the whole range of the laser gain. During tuning of the whole spectral range, there is no need to realign any optics in the laser, except for moving the mirror to track the change of the rf. The peak powers of the output pulses at a pump level of 300  mW are comparable with those of conventional tunable picosecond Ti:sapphire lasers at a cw pump level of almost 10  W.

© 1999 Optical Society of America

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