Ultrashort Q-switched pulses from a passively mode-locked distributed Bragg reflector semiconductor laser

Strain, Michael J and Zanola, Marco and Mezösi, G and Sorel, Marc (2012) Ultrashort Q-switched pulses from a passively mode-locked distributed Bragg reflector semiconductor laser. Optics Letters, 37 (22). pp. 4732-4734.

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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.