Abstract

A compact semiconductor mode-locked laser (MLL) is presented that demonstrates strong passive $Q$-switched mode-locking over a wide range of drive conditions. The $Q$-switched frequency is tunable between 1 and 4 GHz for mode-locked pulses widths around 3.5 ps. The maximum ratio of peak to average power of the pulse-train is $>120$, greatly exceeding that of similarly sized passively MLLs.

© 2012 Optical Society of America

High power (130 mW) 40 GHz 1.55 μm mode-locked distributed Bragg reflector lasers with integrated optical amplifiers

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