University of Oulu

D.A. Korobko, V.A. Ribenek, P.A. Itrin, D.A. Stoliarov, A.A. Fotiadi, Polarization maintaining harmonically mode-locked fiber laser with suppressed supermode noise due to continuous wave injection, Optics & Laser Technology, Volume 162, 2023, 109284, ISSN 0030-3992,

Polarization maintaining harmonically mode-locked fiber laser with suppressed supermode noise due to continuous wave injection

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Author: Korobko, D. A.1; Ribenek, V. A.1; Itrin, P. A.1;
Organizations: 1Ulyanovsk State University, 42 Leo Tolstoy Street, Ulyanovsk 432970, Russian Federation
2Optoelectronics and Measurement Techniques Unit, University of Oulu, Oulu, Finland
3Electromagnetism and Telecommunication Department, University of Mons, Mons B-7000, Belgium
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 2.8 MB)
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Language: English
Published: Elsevier, 2023
Publish Date: 2023-03-13


We report on experimental studies of a SESAM mode-locked Er-doped fiber laser completely spliced from polarization-maintaining fiber components. With the fiber mode spot properly aligned to the SESAM, the laser operates harmonic mode-locking (HML) available in a whole range of pump powers up to ∼355mW with the supermode suppression level (SSL) less than 25 dB. Importantly, the HML laser generates the pulses in a linear polarization state and enables the pulse repetition rate (PRR) up to ∼1145 MHz. In our experiments we show that an optical injection of an external continuous wave (CW) into the laser cavity improves the stability of the laser operation in HML regime resulting in an increase of the SSL by 20–30 dB. Besides, the CW injection is able to expand the range of pump powers available with HML laser providing an increase of the maximal laser PRR up to ∼2195 MHz. Importantly, the implemented optical injection does not affect high purity of the laser polarization state. The presented numerical simulations enable qualitative explanations of the effects observed experimentally.

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Series: Optics & laser technology
ISSN: 0030-3992
ISSN-E: 1879-2545
ISSN-L: 0030-3992
Volume: 162
Article number: 109284
DOI: 10.1016/j.optlastec.2023.109284
Type of Publication: A1 Journal article – refereed
Field of Science: 114 Physical sciences
Funding: This work is supported by the Ministry of Science and Higher Education of the Russian Federation (075-15-2021-581) and Russian Science Foundation (grant # 22-72-10072). A.A.F. is supported by the European Union’s Horizon 2020 research and innovation program (H2020-MSCA-IF-2020, #101028712).
EU Grant Number: (101028712) HiFi Brilliancy - HIgh-speed FIbre-based BRILLouIn ANalyzer for endosCopY
Copyright information: © 2023 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license (