Spectrally tunable phase-biased NALM mode-locked Yb:fiber laser with nJ-level pulse energy

Author(s)

Saeid Ebrahimzadeh, Sakib Adnan, Yishen Li, Vito F. Pecile, Jakob Fellinger, Sarper Salman, Christoph M. Heyl, Ingmar Hartl, Oliver H. Heckl, Gil Porat

Abstract

Applications of mode-locked fiber lasers benefit from robust and self-starting mode-locking, spectral tuning, high pulse energy and high average power. All-polarization-maintaining (PM) fiber lasers mode-locked with a phase-biased nonlinear amplifying loop mirror (NALM) have been shown to be very robust and reliably self-starting, and provide either spectral tuning or high pulse energy, but not both. We report on a simple method for concurrent spectral tuning and nanojoule-level pulse energy scaling of an all-PM phase-biased NALM mode-locked Yb:fiber laser, which we demonstrate over a 54 nm tuning range, reaching up to 1.67 nJ pulse energy and 126 mW average power. Unlike other laser configurations, our results show that net normal dispersion is not necessary or optimal for scaling the pulse energy of this type of mode-locked fiber laser.

Organisation(s)

Faculty Center for Nano Structure Research

External organisation(s)

University of Alberta, Deutsches Elektronen-Synchrotron DESY, GSI Helmholtzzentrum für Schwerionenforschung, Helmholtz-Institute Jena

Journal

JPhys Photonics

Volume

6

No. of pages

7

ISSN

2515-7647

DOI

https://doi.org/10.1088/2515-7647/ad3d1b

Publication date

04-2024

Peer reviewed

Yes

Austrian Fields of Science 2012

103016 Laser physics, 103021 Optics

Keywords

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

Portal url

https://ucris.univie.ac.at/portal/en/publications/spectrally-tunable-phasebiased-nalm-modelocked-ybfiber-laser-with-njlevel-pulse-energy(44a6d72e-63e2-40a3-a537-95fca12aa526).html