Coherent spectral bandwidth combining by optical pulse injection locking in quantum dot modelocked semiconductor diode lasers

摘要

An optical pulse injection locking technique is employed to generate shorter pulses from a passively modelocked quantum dot laser. The optical pulse injection locking enables the coherent addition of phaselocked longitudinal mode groups from two separate modelocked lasers without the use of stabilisation control loops, thus increasing the spectral bandwidth output resulting in optical pulses with shorter temporal duration.