Title :
Femtosecond carrier dynamics and modelocking in monolithic CPM lasers
Author :
Brorson, S.D. ; Bischoff, S. ; Mørk, J. ; Møller-Larsen, A. ; Nielsen, J.M.
Author_Institution :
Tele Danmark Res. & Dev., Horsholm, Denmark
Abstract :
Femtosecond pump-probe measurements of the dynamics in both forward- and reverse-biased semiconductor optical waveguides are presented. Slow (nanosecond) as well as ultrafast (femtosecond) dynamics are observed in both kinds of structures. These measurements imply that the "slow saturable absorber" theory of modelocking in monolithic CPM devices is incomplete.
Keywords :
laser mode locking; optical saturable absorption; semiconductor lasers; waveguide lasers; femtosecond pump-probe measurement; modelocking; monolithic CPM laser; semiconductor optical waveguide; slow saturable absorber; ultrafast carrier dynamics; Laser modes; Laser theory; Optical pumping; Optical waveguide theory; Optical waveguides; Pump lasers; Semiconductor lasers; Semiconductor waveguides; Ultrafast optics; Waveguide lasers;
Journal_Title :
Photonics Technology Letters, IEEE
