Wavelength tunable soliton rains in a nanotube-mode locked Tm-doped fiber laser

TL;DR

This paper demonstrates a wavelength-tunable Tm-doped fiber laser that produces soliton rains, with harmonic detection and over 56nm tunability, offering potential for ultrafast spectroscopy applications.

Contribution

It introduces a novel tunable soliton rain laser using carbon nanotube mode-locking with significant wavelength adjustability.

Findings

Achieved over 56nm wavelength tunability from 1877 to 1933nm.

Detected second- and third-harmonics of soliton rains.

System shows promise as a tunable filter for ultrafast spectroscopy.

Abstract

We report soliton rains in a tuneable Tm-doped fiber laser mode locked by carbon nanotubes. We also detect their second- and third-harmonic. We achieve a tuneability of over 56nm, from 1877 to 1933nm, by introducing a polarization-maintaining isolator and two in-line polarization controllers. This makes our system promising as a tuneable filter for ultrafast spectroscopy.