A novel pulsed fiber laser: Further study on the bias-pumped gain-switched fiber laser

TL;DR

This paper introduces a new bias-pumped gain-switched fiber laser that simplifies pulsed laser design and allows for tunable, controllable pulse shapes using a novel pulsing mechanism with bias and pulsed pumps.

Contribution

It presents a novel pulsed fiber laser mechanism that eliminates the need for complex control units, enabling simpler design and tunable pulse characteristics.

Findings

Achieved stable pulsed output with tunable durations.

Demonstrated controllable pulse shapes based on the new pulsing mechanism.

Simplified laser design compared to conventional gain-switched lasers.

Abstract

The bias-pumped gain-switched fiber laser proposed by us is considered a novel pulsed fiber laser based on a new pulsing mechanism. With a certain signal power seeding, synchronization of temporal evolution can be kept between the output signal laser and the pump. The seed laser can be supplied conveniently by a CW pump power which is named bias pump power. A pulsed pump is responsible for shaping the output pulse. Stable pulsed lasers with tunable durations can be achieved under bias pump combined with pulsed pump. In addition, the temporal shape of output pulses can be controllable based on this new pulsing mechanism. Compared with conventional gain-switched fiber laser, a much simpler pulsed laser design can be provided by this novel pulsed fiber laser because it is no need to add a control unit to realize fast gain-switching.