Title :
Scalar Nanosecond Pulse Generation in a Nanotube Mode-Locked Environmentally Stable Fiber Laser
Author :
Woodward, R.I. ; Kelleher, E.J.R. ; Popa, D. ; Hasan, T. ; Bonaccorso, F. ; Ferrari, A.C. ; Popov, S.V. ; Taylor, J.R.
Author_Institution :
Dept. of PhysicsFemtosecond Opt. Group, Imperial Coll. London, London, UK
Abstract :
We report an environmentally stable nanotube mode-locked fiber laser producing linearly-polarized, nanosecond pulses. A simple all-polarization-maintaining fiber ring cavity is used, including 300 m of highly nonlinear fiber to elongate the cavity and increase intracavity dispersion and nonlinearity. The laser generates scalar pulses with a duration of 1.23 ns at a center wavelength of 1042 nm, with 1.3-nm bandwidth and at 641-kHz repetition rate. Despite the long cavity, the output characteristics show no significant variation when the cavity is perturbed, and the degree of polarization remains at 97%.
Keywords :
fibre lasers; laser beams; laser mode locking; nanotubes; nonlinear optics; optical fibre dispersion; optical fibre polarisation; optical pulse generation; ring lasers; all-polarization-maintaining fiber ring cavity; center wavelength; environmentally stable nanotube mode-locked fiber laser; highly nonlinear fiber; intracavity dispersion; linearly-polarized pulses; nonlinearity; output characteristics; polarization degree; scalar nanosecond pulse generation; size 300 m; time 1.23 ns; wavelength 1042 nm; Cavity resonators; Chirp; Dispersion; Graphene; Laser mode locking; Laser stability; Ultrafast optics; Laser mode locking; fiber lasers; optical polarization; optical pulse shaping;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2014.2330739
