Journal Article

PUBDB-2025-01719

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Optimized Noise and Stability Regimes in XPM-Suppressed All-PM Linear Mode-locked Fiber Lasers

Edelmann, M. (Corresponding author)CFEL*Extern* ; hua, Y. ; Shafak, K.Extern* ; El Sharkawy, Y.Extern* ; Pergament, M.CFEL*DESY* ; Kärtner, F.CFEL*XFEL.EU*DESY*

2025
IEEE Washington, DC

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Please use a persistent id in citations: doi:10.1109/JLT.2025.3581998  doi:10.3204/PUBDB-2025-01719

Abstract: We demonstrate that suppression of intra-cavity cross-phase modulation (XPM) significantly improves the stability and noise performance of all-PM linear mode-locked fiber oscillators. Comprehensive numerical simulations show that XPM suppression dramatically expands the oscillator’s stability range by reducing roundtrip nonlinear phase-noise accumulation and intensity fluctuations. For experimental confirmation, a modified oscillator with switchable XPM suppression is constructed, enabling direct comparative measurements in both soliton and stretched-pulse regimes. In agreement with the numerical results, XPM suppression is found to enable a substantial reduction in relative intensity noise (RIN) and timing jitter, with integrated RIN decreasing from 0.08% to 0.06% and jitter improving from 87 fs to 39 fs (9 kHz - 5 MHz) in the soliton regime. In the stretched-pulse regime, RIN drops from 0.07% to 0.04%, and jitter is reduced from 22 fs to 14.5 fs (3 kHz - 5 MHz). These results advance XPM-suppressed all-PM linear mode-locked fiber lasers toward precision applications in frequency metrology, optical synchronization, and biomedical imaging.

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Contributing Institute(s):

1. Ultrafast Lasers & X-rays Division (FS-CFEL-2)

Research Program(s):

1. 631 - Matter – Dynamics, Mechanisms and Control (POF4-631) (POF4-631)
2. AIM, DFG project G:(GEPRIS)390715994 - EXC 2056: CUI: Advanced Imaging of Matter (390715994) (390715994)

Experiment(s):

1. Experiments at CFEL

Appears in the scientific report 2025

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Database coverage:
; ; ; Clarivate Analytics Master Journal List ; Current Contents - Electronics and Telecommunications Collection ; Current Contents - Engineering, Computing and Technology ; Essential Science Indicators ; IF < 5 ; JCR ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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