Bandwidth-limited pulses (16 ps duration,Δ t Δ ν = 0.36) are obtained from an actively mode-locked GaAlAs CW diode laser. Replacing the 380 MHz sinewave modulation by repetitive ∼300 ps pumping pulses produces more stable operation at 1 W peak power output pulses. A synchronized streak camera monitors the pulse profiles and reveals that the modulation frequency must be maintained stable to <10 kHz to avoid pulse broadening and substructures.
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Bradley et al. (1981) studied this question.
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