Mode-Locked Tm Fiber Laser With a Tapered GIMF SA Based on Nonlinear Multimode Interference Effect

Jiang, Hao; Li, Huanhuan; Hu, Fangming; Ren, Xinghao; Li, Can; Xu, Shiqing

doi:10.1109/lpt.2020.2980126

Cited by 28 publications

(5 citation statements)

References 35 publications

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“…The maximum output power at the single-pulse operation is measured to be 2.8 mW at the pump power of 230 mW, corresponding to the pulse energy of 178 pJ. Compared with our previous work [20], the pulse energy of our laser is nearly eight times larger than that of the laser using the stretched GIMF SA. The results show that less modes in the FMF reduce the mode loss and increase the proportion of the fundamental mode.…”

Section: Resultsmentioning

confidence: 60%

“…By employing a hybrid of SIMF-GIMF SAs, stable mode-locking operations were achieved in a TDFL [17] and erbium-doped fiber laser [18], respectively. Other combinations of SMF-GIMF-SMF SAs, such as offset-spliced GIMF [19] and tapered GIMF [20] are also reported. Until now, a variety of MMF-based SAs have been developed and applied to ultrafast fiber lasers in wide wavelength regions covering 1, 1.55 and 2 µm [21][22][23][24].…”

Section: Introductionmentioning

confidence: 97%

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Mode-locked thulium-doped fiber laser using a stretched few-mode fiber as a saturable absorber

Wang,

Zhong,

et al. 2024

Laser Phys.

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In this work, an all-fiber saturable absorber (SA) based on nonlinear multimode interference in a short few-mode fiber (FMF) was proposed. Saturable absorption in this all-fiber device was demonstrated with an absorption modulation depth and a saturation fluence of 14.3% and 55.6 μJ cm−2, respectively. A stable mode-locking operation was observed in a thulium-doped passively mode-locked fiber laser using the FMF-based FMF SA. Ultrafast pulses were generated at 1911 nm with a pulse width of 1.96 ps and a 15.69 MHz repetition rate, respectively. The output average power was 2.8 mW, corresponding to a pulse energy of 178 pJ, which was significantly improved compared to graded-index multimode fiber-based SA. The experimental results demonstrate that FMF SA has great potential in eye-safe ultrafast photonics.

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Section: Resultsmentioning

confidence: 60%

Section: Introductionmentioning

confidence: 97%

Mode-locked thulium-doped fiber laser using a stretched few-mode fiber as a saturable absorber

Wang,

Zhong,

et al. 2024

Laser Phys.

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“…Subsequently, stable optical pulses were obtained in erbium-doped and thulium-doped fiber lasers with no core fiber (NCF)-GIMF SAs [19,20]. Recently, a tapered GIMF-based modulator has been employed to realize tunable mode-locked pulses in a thulium-doped fiber laser [21]. In 2021, an innovative hybrid structure composed of GIMF and graphene for stable optical pulses was reported by Li X et al [22].…”

Section: Introductionmentioning

confidence: 99%

Generation and Dynamics of Multiple Pulses in an Ultrafast Fiber Laser with a Single-Mode Fiber–Graded-Index Multimode Fiber–Single-Mode Fiber-Based Saturable Absorber

Yang,

Zeng,

Yang

et al. 2024

Photonics

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In this study, we have investigated the evolution process and dynamic characteristics of a multi-pulse regime in an erbium-doped fiber ring laser based on a single-mode fiber–graded-index multimode fiber–single-mode fiber (SMF-GIMF-SMF) structure as an optical modulator. By utilizing the excellent nonlinear optical absorption of the SMF-GIMF-SMF (SMS) device with a modulation depth of ~8.68%, stable single-pulse mode locking at the frequency of 9.84 MHz can be readily observed at low pump power. In addition, the single-pulse operation can evolve into a multiple-pulse regime on account of the peak-power-clamping effect via suitably raising the pump power and carefully regulating the polarization state. Further, the single-shot temporal evolution of multiple pulses is monitored, indicating that this state shows unique and interesting temporal characteristics with variable pulse separations and inconsistent pulse intensities, which, as far as we know, is the first such observation in ultrafast fiber lasers. Additionally, this study, based on the time-stretch dispersive Fourier transformation method, suggests that these multiple pulses consist of chaotic wave envelopes with erratic intensities and changeable pulse energy. We believe that these findings have profound implications for revealing fascinating nonlinear pulse dynamics in ultrafast fiber optics.

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“…In all-normal-dispersion (1 μm waveband) [ 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 ] and the anomalous-dispersion domain (1.5 μm, 2 μm) [ 29 , 30 , 31 , 32 , 33 , 34 ], the lasers based on NL-MMI as SA have been studied by many scholars. In 2018, Tegin et al used NL-MMI mechanism for the first time to realize mode-locking operation in the 1 μm region [ 19 ].…”

Section: Introductionmentioning

confidence: 99%

Dispersion Management Nonlinear Multimode Interference Mode-Locked Ytterbium Fiber Laser

Wang

Qiu

2023

Nanomaterials

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Dispersion management plays an important role in improving the output performance of a mode-locked fiber laser. Therefore, dispersion management is carried out by introducing the grating pair in our experiment. Through adjusting the distance between the grating pair, mode-locked pulses corresponding to different dispersion regimes can be realized, which typically range from soliton state in the anomalous dispersion regime to the dissipative soliton format in the normal dispersion regime. Furthermore, tunable spectrum distribution can be achieved by adjusting two intra-cavity polarization controllers. The proposed dispersion management method complements mode-locking techniques based on nonlinear multimode interference (NL-MMI). The laser can operate with self-start mode locking stably and is useful for practice applications.

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Mode-Locked Tm Fiber Laser With a Tapered GIMF SA Based on Nonlinear Multimode Interference Effect

Cited by 28 publications

References 35 publications

Mode-locked thulium-doped fiber laser using a stretched few-mode fiber as a saturable absorber

Mode-locked thulium-doped fiber laser using a stretched few-mode fiber as a saturable absorber

Generation and Dynamics of Multiple Pulses in an Ultrafast Fiber Laser with a Single-Mode Fiber–Graded-Index Multimode Fiber–Single-Mode Fiber-Based Saturable Absorber

Dispersion Management Nonlinear Multimode Interference Mode-Locked Ytterbium Fiber Laser

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