Picosecond semiconductor lasers with an external fibre resonator

摘要

The passive mode-locking regime of multisection GaAlAsheterostructure laser diodes has been studied Pieces of single-modeoptical fibres with an edge nonselective mirror or a fibre Bragggrating have been used as an external cavity. Regular trains ofotical pulses a few picosecond long and with a peak power of a fewwatts have been obtained under dc current injection. Spectralcharacteristics of the pulses are crucially dependent on theparameters and adjustment of the external cavity.