Formation and Evolution of Soliton in Two-Mode Fiber Laser

High-order mode fiber lasers are gathering the rising attentions from fundamental researches to practical applications due to their distinctive spatial and temporal properties. Here, we demonstrate a carbon nanotube mode-locked two-mode fiber laser and investigate the formation and evolution process...

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Main Authors: Yang Zheng, Dong Mao, Zhiwen He, Hua Lu, Wending Zhang, Jianlin Zhao
Format: Article
Language:English
Published: IEEE 2020-01-01
Series:IEEE Photonics Journal
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Online Access:https://ieeexplore.ieee.org/document/9162470/
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author Yang Zheng
Dong Mao
Zhiwen He
Hua Lu
Wending Zhang
Jianlin Zhao
author_facet Yang Zheng
Dong Mao
Zhiwen He
Hua Lu
Wending Zhang
Jianlin Zhao
author_sort Yang Zheng
collection DOAJ
description High-order mode fiber lasers are gathering the rising attentions from fundamental researches to practical applications due to their distinctive spatial and temporal properties. Here, we demonstrate a carbon nanotube mode-locked two-mode fiber laser and investigate the formation and evolution process of the soliton based on the time-stretch dispersive Fourier transform method. Stable single pulse and bound-state pulses are observed at pump powers of 32.0 and 41.3 mW, respectively. Attributing to the coexistence of fundamental mode and first group high-order modes, the optical spectrum exhibits slight intensity modulations and the autocorrelation trace shows additional small side lobes. Similar to that of single-mode fiber lasers, the buildup process of soliton includes the relaxation oscillation, beating behavior, and stable mode-locking state. However, owing to the interplay between two transverse modes in the two-mode fiber laser, the duration and fluctuation intensity of the relaxation oscillation are much larger than that of single-mode fiber lasers.
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publishDate 2020-01-01
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spelling doaj-art-e5db9c8fbc16409f9dbf8b844be69acc2025-08-20T03:33:21ZengIEEEIEEE Photonics Journal1943-06552020-01-011241810.1109/JPHOT.2020.30150299162470Formation and Evolution of Soliton in Two-Mode Fiber LaserYang Zheng0Dong Mao1https://orcid.org/0000-0002-5744-6316Zhiwen He2Hua Lu3Wending Zhang4https://orcid.org/0000-0003-1411-1425Jianlin Zhao5MOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions and the Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, ChinaMOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions and the Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, ChinaMOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions and the Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, ChinaMOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions and the Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, ChinaMOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions and the Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, ChinaMOE Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions and the Shaanxi Key Laboratory of Optical Information Technology, School of Physical Science and Technology, Northwestern Polytechnical University, Xi'an, ChinaHigh-order mode fiber lasers are gathering the rising attentions from fundamental researches to practical applications due to their distinctive spatial and temporal properties. Here, we demonstrate a carbon nanotube mode-locked two-mode fiber laser and investigate the formation and evolution process of the soliton based on the time-stretch dispersive Fourier transform method. Stable single pulse and bound-state pulses are observed at pump powers of 32.0 and 41.3 mW, respectively. Attributing to the coexistence of fundamental mode and first group high-order modes, the optical spectrum exhibits slight intensity modulations and the autocorrelation trace shows additional small side lobes. Similar to that of single-mode fiber lasers, the buildup process of soliton includes the relaxation oscillation, beating behavior, and stable mode-locking state. However, owing to the interplay between two transverse modes in the two-mode fiber laser, the duration and fluctuation intensity of the relaxation oscillation are much larger than that of single-mode fiber lasers.https://ieeexplore.ieee.org/document/9162470/Two-mode fiber lasersoliton evolutiondispersive Fourier transform
spellingShingle Yang Zheng
Dong Mao
Zhiwen He
Hua Lu
Wending Zhang
Jianlin Zhao
Formation and Evolution of Soliton in Two-Mode Fiber Laser
IEEE Photonics Journal
Two-mode fiber laser
soliton evolution
dispersive Fourier transform
title Formation and Evolution of Soliton in Two-Mode Fiber Laser
title_full Formation and Evolution of Soliton in Two-Mode Fiber Laser
title_fullStr Formation and Evolution of Soliton in Two-Mode Fiber Laser
title_full_unstemmed Formation and Evolution of Soliton in Two-Mode Fiber Laser
title_short Formation and Evolution of Soliton in Two-Mode Fiber Laser
title_sort formation and evolution of soliton in two mode fiber laser
topic Two-mode fiber laser
soliton evolution
dispersive Fourier transform
url https://ieeexplore.ieee.org/document/9162470/
work_keys_str_mv AT yangzheng formationandevolutionofsolitonintwomodefiberlaser
AT dongmao formationandevolutionofsolitonintwomodefiberlaser
AT zhiwenhe formationandevolutionofsolitonintwomodefiberlaser
AT hualu formationandevolutionofsolitonintwomodefiberlaser
AT wendingzhang formationandevolutionofsolitonintwomodefiberlaser
AT jianlinzhao formationandevolutionofsolitonintwomodefiberlaser