A. Rahwanto et al., GENERATION OF TRANSFORM-LIMITED PULSE-TRAIN IN NEW SCHEME OF HARMONICALLY MODE-LOCKED ER-DOPED FIBER RING LASERS, Optical review, 5(1), 1998, pp. 5-8
A new scheme of an amplitude modulated harmonically mode-locked Er-dop
ed fiber ring laser is proposed, and the lasing characteristics are ex
perimentally investigated. The transform-limited sech(2) pulses at the
repetition frequency of 1.64 GHz are stably generated. The pulse widt
h and spectral bandwidth are independent of both the amplitude modulat
ed (AM) modulation signal frequency and the AM modulation depth.