Scaling Fiber Lasers to Large Mode Area: An Investigation of Passive Mode-Locking Using a Multi-Mode Fiber

Spatiotemporal mode-locking in multimode fiber lasers.

A laser is based on the electromagnetic modes of its resonator, which provides the feedback required for oscillation. Enormous progress has been made toward controlling the interactions of longitudinal modes in lasers with a single transverse mode. For example, the field of ultrafast science has been built on lasers that lock many longitudinal modes together to form ultrashort light pulses. How...

Power Scaling Fiber Amplifiers Using Very-large-mode-area Fibers

Mode Locked Fiber Lasers

Filamentation analysis in large-mode-area fiber lasers

Starting from the paraxial wave equation, an analytic expression for filament threshold in fiber lasers is derived. The occurrence of filamentation is determined by the larger of two thresholds, one of perturbative gain and one of spatial confinement. The threshold value is approximately a few megawatts, depending on the parameters of the fiber. © 2007 Optical Society of America OCIS codes: 060...

Large mode area Yb - doped photonic bandgap fiber lasers

Large mode area Yb-doped photonic bandgap fiber lasers Report Title Fiber lasers are in the process of revolutionizing modern manufacturing. Further power scaling is still much desired to increase throughput and to break new frontiers in science and defense. It has become very clear now that highly single-mode fibers with large effective mode areas are required to overcome both nonlinear effect...