Nonlinear ultrafast fiber amplifiers beyond the gain-narrowing limit.

ABSTRACT: Ultrafast lasers are becoming increasingly widespread in science and industry alike. Fiber-based ultrafast laser sources are especially attractive because of their compactness, alignment-free setups, and potentially low cost. However, confining short pulses within a fiber core leads to high intensities, which drives a host of nonlinear effects. While these phenomena and their interactions greatly complicate the design of such systems, they can also provide opportunities for engineering new capabilities. Here, we report a new fiber amplification regime distinguished by the use of a dynamically evolving gain spectrum as a degree of freedom: as a pulse experiences nonlinear spectral broadening, absorption and amplification actively reshape both the pulse and the gain spectrum itself. The dyna

SUBMITTER: Sidorenko P 

PROVIDER: S-EPMC7250401 | biostudies-literature | 2019 Oct

REPOSITORIES: biostudies-literature