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New Publication - Editors' Pick

15.06.2020

Our latest publication "Flexible all-PM NALM Yb:fiber laser design for frequency comb applications: operation regimes and their noise properties" by Mayer, A. S. et al. has been highlighted as Editors' Pick!

 

Authors

Aline S. Mayer, Wilfrid Grosinger, Jakob Fellinger, Georg Winkler, Lukas W. Perner, Stefan Droste, Sarper H. Salman, Chen Li, Christoph M. Heyl, Ingmar Hartl, and Oliver H. Heckl

 

Abstract

We present a flexible all-polarization-maintaining (PM) mode-locked ytterbium (Yb):fiber laser based on a nonlinear amplifying loop mirror (NALM). In addition to providing detailed design considerations, we discuss the different operation regimes accessible by this versatile laser architecture and experimentally analyze five representative mode-locking states. These five states were obtained in a 78-MHz configuration at different intracavity group delay dispersion (GDD) values ranging from anomalous (-0.035 ps2) to normal (+0.015 ps2). We put a particular focus on the characterization of the intensity noise as well as the free-running linewidth of the carrier-envelope-offset (CEO) frequency as a function of the different operation regimes. We observe that operation points far from the spontaneous emission peak of Yb (∼1030 nm) and close to zero intracavity dispersion can be found, where the influence of pump noise is strongly suppressed. For such an operation point, we show that a CEO linewidth of less than 10-kHz at 1 s integration can be obtained without any active stabilization.

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