Timing-jitter reduction of a mode-locked Cr:LiSAF laser by simultaneous control of cavity length and pump power.
The pulse-repetition frequency of a mode-locked Cr:LiSAF laser has been stabilized to an electrical reference signal by simultaneous control of the laser cavity length and the pump power. The phase difference between the laser pulse and an electrical reference signal is detected by use of a digital phase detector and fed back to a piezoelectric transducer and to a laser diode injection current. A rms timing jitter of 7.5 fs relative to the reference was obtained for the 25-mHz-10-kHz bandwidth.
Tsuchida
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