Studying the operation of an all-PM Yb-doped fiber laser oscillator at negative and positive net cavity dispersion

TL;DR

This paper explores the operation of an all-PM Yb-doped fiber laser oscillator across negative and positive net cavity dispersion, demonstrating tunable ultrafast pulses with high energy and short duration.

Contribution

It introduces a dispersion-managed all-polarization-maintaining fiber oscillator with a chirped fiber Bragg grating, enabling control over pulse dynamics beyond typical regimes.

Findings

Operates at net dispersion from -0.098 to +0.067 ps^2

Delivers stable pulses up to 2.3 nJ energy

Achieves pulse durations as short as 98 fs

Abstract

Chirped fiber Bragg gratings in Yb-doped fiber lasers allow tuning the net cavity dispersion, thus enabling access to pulse dynamics beyond the typical all-normal-dispersion dissipative soliton regime. This Letter demonstrates an ultrafast dispersion-managed all-polarization-maintaining fiber oscillator mode-locked with a nonlinear optical loop mirror. Using a chirped fiber Bragg grating inside the oscillator, it can work at net cavity dispersion in the range from -0.098 ps$^2$ up to +0.067 ps$^2$ and above at the wavelength of 1 $\mathrm{\mu}$m. Depending on the configuration, the system can deliver stable pulses with energies up to 2.3 nJ and pulse durations as short as 98 fs.