Self-starting spatiotemporal mode-locking using Mamyshev regenerators

Yang, Changxi; Cao, Bo; Xiao, Xiaosheng; Gao, Chenxin; Bao, Chengying; Ding, Yiwen

doi:10.1364/ol.469291

Cited by 17 publications

(10 citation statements)

References 23 publications

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“…[44,120,121] Cao et al initiated the STML Mamyshev oscillator by adjusting the filter separation alone. [121] However, this method is inconvenient and impractical for large applications because the filter is located within the laser cavity.…”

Section: Starting With Pump Modulationmentioning

confidence: 99%

“…[59] Furthermore, many researchers have attempted to start MO by adjusting the separation of the filters alone and demonstrated the feasibility of this method in numerical simulations and experiments. [44,120,121] Cao et al initiated the STML Mamyshev oscillator by adjusting the filter separation alone. [121] However, this method is inconvenient and impractical for large applications because the filter is located within the laser cavity.…”

Section: Starting With Pump Modulationmentioning

confidence: 99%

See 1 more Smart Citation

Generation of High‐Peak‐Power Femtosecond Pulses in Mamyshev Oscillators: Recent Advances and Future Challenges

Gao

et al. 2023

Laser & Photonics Reviews

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Mamyshev oscillators (MOs) have attracted significant attention given their potential in yielding ultrafast lasers with high peak power. Based on step‐like saturable absorbers and self‐similar evolution in the gain fiber, MO technology features an advanced system capable of generating ultrastable femtosecond pulses with ultrahigh peak power. In this review, the principle of MO is presented in terms of their transmission function and tolerance to nonlinear phase shift and recent progress is reported in the advanced output performance of MO, manifested through high peak power, few‐cycles, high repetition rate, and supercontinuum generation. MO with various operation wavelengths (1, 1.5, and 2 μm) are examined, and MO starting methods are fully discussed, followed by a detailed account of diverse potential applications in areas such as biomedical imaging and material processing. Based on current progress, the prospective challenges and future directions of MO are highlighted and discussed.

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Section: Starting With Pump Modulationmentioning

confidence: 99%

Section: Starting With Pump Modulationmentioning

confidence: 99%

Generation of High‐Peak‐Power Femtosecond Pulses in Mamyshev Oscillators: Recent Advances and Future Challenges

Gao

et al. 2023

Laser & Photonics Reviews

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“…Intriguing nonlinear effects such as soliton molecules, [ 13 ] self‐similar pulse, [ 14 ] and beam self‐cleaning [ 15,16 ] were achieved in STML lasers at 1

\umu

m. Cavities incorporated with Mamyshev regenerators [ 17 ] and large‐modal dispersion [ 18 ] can be implemented in STML lasers to extend the performance. Visible‐wavelength STML laser was also reported at 635 nm.…”

Section: Introductionmentioning

confidence: 99%

Beam Self‐Cleaning of 1.5 μ$\umu$m High Peak‐Power Spatiotemporal Mode‐Locked Lasers Enabled By Nonlinear Compression and Disorder

et al. 2023

Laser & Photonics Reviews

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The realization of beam self-cleaning in a cavity is more challenging than in the outside cavity. The peak power of intracavity pulses needs to be high to reach the threshold of beam self-cleaning, which usually relies on additional diffraction grating to compress pulses in a positive-dispersion cavity. Here, it is first experimentally and numerically demonstrated that self-cleaning can be observed in an all-fiber high peak-power Er-doped spatiotemporal mode-locked (STML) laser at all-negative-dispersion. Through the nonlinear compression of graded-index multimode fiber, the pulses are compressed along with the emergence of beam self-cleaning. Besides, the inherent disorder of multimode fiber accelerates the self-cleaning process. The intracavity pulse energy of ≈13 nJ with a pulse duration of 734.5 fs is derived under a highly multimode excitation, with an output pulse energy of 2.33 nJ. The pulse energy is a nearly fourfold improvement over the previous report in all-fiber STML at 1.5 𝛍m. Temporal-dependent characteristics and nonlinear polarization dynamics of beam self-cleaning are also experimentally uncovered. It is demonstrated that the STML fiber laser will enable new insights into nonlinear pulse propagation in cavities and related applications.

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“…Spatiotemporal mode-locking in the multimode Mamyshev oscillator and its self-starting operation were investigated. 9,10 Spatiotemporal mode-locking in the visible wavelength region was realized in a Pr 3+ /Yb 3+ codoped fiber laser. 11 By using fiber-based components, all-fiber STML lasers were realized.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Recently, we demonstrated that spatiotemporal mode-locking could also be achieved in multimode cavities composed of MMFs with large modal dispersion, where passive nonlinear auto-selection of single-mode mode-locking and transition between multimode Q -switching and spatiotemporal mode locking were observed. Spatiotemporal mode-locking in the multimode Mamyshev oscillator and its self-starting operation were investigated. , Spatiotemporal mode-locking in the visible wavelength region was realized in a Pr 3+ /Yb 3+ co-doped fiber laser . By using fiber-based components, all-fiber STML lasers were realized. − Automatic spatiotemporal mode-locking was achieved in an MMF laser by using genetic wavefront shaping .…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Period-Doubling Bifurcation in Mode-Locked Multimode Fiber Lasers

et al. 2022

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Spatiotemporal mode-locked (STML) lasers are ideal platforms for investigating high-dimensional nonlinear dynamics. This study presents an experimental observation and theoretical investigation of a novel high-dimensional nonlinear dynamics, which we term spatiotemporal period-doubling bifurcation (SPB), in the STML lasers. In the SPB state, not only the temporal shape but also the spatial beam (i.e., the spatiotemporal structure) of the pulses exhibit period-doubling bifurcation. As a result, it is observed that the pulse train modulation varies with the transverse mode, and the output beam profile fluctuates rapidly and periodically. Our numerical simulations are in good agreement with the experimental observations. In addition, a simple iterative model is presented to underline the physical insights of SPB, by considering the mode-dependent saturable absorption effect. Based on these results, spatial-dependent saturable absorption is believed to be the key factor for the unique spatiotemporal characteristic of SPB in multimode lasers. This study contributes to the understanding of the complex spatiotemporal dynamics in STML multimode lasers and to the discovery of novel dynamics in high-dimensional nonlinear systems.

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Self-starting spatiotemporal mode-locking using Mamyshev regenerators

Cited by 17 publications

References 23 publications

Generation of High‐Peak‐Power Femtosecond Pulses in Mamyshev Oscillators: Recent Advances and Future Challenges

Generation of High‐Peak‐Power Femtosecond Pulses in Mamyshev Oscillators: Recent Advances and Future Challenges

Beam Self‐Cleaning of 1.5 μ$\umu$m High Peak‐Power Spatiotemporal Mode‐Locked Lasers Enabled By Nonlinear Compression and Disorder

Spatiotemporal Period-Doubling Bifurcation in Mode-Locked Multimode Fiber Lasers

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