Self-organized compound pattern and pulsation of dissipative solitons in a passively mode-locked fiber laser

TL;DR

This paper reports the experimental observation of self-organized soliton patterns and pulsations in a passively mode-locked fiber laser, highlighting the role of optomechanical interactions and spectral dynamics.

Contribution

It demonstrates the formation of equidistant soliton bunches and their pulsation behavior, revealing new insights into soliton self-organization in fiber lasers.

Findings

Soliton bunches form with equidistant spacing.

Solitons exhibit pulsation with periods tied to cavity round trips.

Kelly sidebands appear periodically, synchronized with pulsation.

Abstract

We experimentally observe soliton self-organization and pulsation in a passively mode-locked fiber laser. The optomechanical interaction in the optical fiber is key to the formation of equidistant soliton bunches. These solitons simultaneously undergo a pulsation process with a period corresponding to tens of the cavity round trip time. Using the dispersive Fourier transformation technique, we find that the Kelly sidebands in the shot-to-shot spectra appear periodically, synchronizing with the pulsation.