Mode-Locked Pulsed Fiber Laser (PFL)Project 
PFL Wiki Page

Fiber-based femtosecond mode-locked laser. The green glow is from two-photon pump upconversion in the Er-doped gain fiber at ~ 550nm.

Schematic of fiber mode-locked femtosecond laser with free space mode-locking components.                             

View of laser pulses on a 1.5GHz DSO. Pulse widths (400ps) are instrument limited with a rep rate of ~ 34.6MHz.