Title :
Nanosecond Pulse Generation in Lumped Normally Dispersive All-Fiber Mode-Locked Laser
Author :
Zhang, M. ; Kelleher, E.J.R. ; Obraztsova, E.D. ; Popov, S.V. ; Taylor, J.R.
Author_Institution :
Dept. of Phys., Imperial Coll. London, London, UK
Abstract :
We report an all-normal dispersion, all-fiber integrated ytterbium laser mode-locked by a single wall carbon nanotube (SWNT) saturable absorber, with a chirped fiber Bragg grating (CFBG) providing dispersion of 35.71 ps ·nm-1 allowing us to directly obtain nanosecond-scale duration pulses. In this large positive dispersion regime, mode-locking is initiated by the saturable action of the SWNT device, with pulse formation stabilized by the combined bandwidth limiting effect of the gain dispersion and the narrow reflection band of the CFBG.
Keywords :
Bragg gratings; carbon nanotubes; fibre lasers; integrated optics; laser mode locking; laser stability; nanophotonics; nanotube devices; optical fibre dispersion; optical pulse generation; optical saturable absorption; reflectivity; ytterbium; SWNT device; Yb; all-fiber integrated mode-locked ytterbium laser; bandwidth limiting effect; chirped fiber Bragg grating; gain dispersion; lumped normal dispersion; nanosecond pulse generation; positive dispersion; reflection band; single wall carbon nanotube saturable absorber; Cavity resonators; Fiber gratings; Fiber lasers; Laser mode locking; Optical fiber dispersion; Bragg gratings; fiber lasers; laser mode locking; ytterbium;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2011.2161462
