We report the generation of ultrashort light pulses from cw-pumped Cr, Tm:YAG and Cr, Tm, Ho:YAG lasers actively mode-locked by an acousto-optic modulator. The pulse duration obtained from Tm:YAG was 45 ps which was approximately two times the bandwidth limit. Mode-locked pulses less than 800 ps were also produced in Cr, Tm, Ho:YAG.
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Heine et al. (1992) studied this question.
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