Multiple soliton mode-locking operations of a Holmium-doped fiber laser based on nonlinear polarization rotation

Hu, Ping; Mao, Jiajia; Zhou, Xue; Feng, Tianli; Nie, Hongkun; Wang, Ruihua; Zhang, Baitao; Li, Tao; He, Jingliang; Yang, Kejian

doi:10.1016/j.optlastec.2023.109218

Cited by 16 publications

(2 citation statements)

References 25 publications

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“…These observations have witnessed the complexity and rich dynamics of multiple solitons. Currently, in the 2 μm mid-infrared band, various types of multiple soliton pulses have been investigated, such as harmonic mode locking [22,23] , tightly bound state solitons [24] , and bunch state solitons [25] . However, the interactions between multiple pulses can exhibit either weak or strong effects, giving rise to numerous unexplored pulse dynamics.…”

Section: Introductionmentioning

confidence: 99%

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2024

中国光学快报

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We demonstrate the generation of a unique regime of multiple solitons in a Tm-doped ultrafast fiber laser at ∼1938.72 nm. The temporal pulse-to-pulse separation among the multiple solitons, 10 in a single-pulse bunch, increases from 0.89 ns to 1.85 ns per round trip. In addition, with the increasing pump power, the number of bunched solitons increases from 3 up to 24 linearly, while the average time separation in the soliton bunch varies irregularly between ∼0.80 and ∼1.52 ns. These results contribute to a more profound comprehension of nonlinear pulse dynamics in ultrafast fiber lasers.

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Section: Introductionmentioning

confidence: 99%

Untitled

2024

中国光学快报

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“…Operation in the stretched-pulse dispersion regime was also demonstrated [ 22 ]. Nonlinear polarization evolution (NPE) based on the nonlinear optical Kerr effect in fibers [ 23 , 24 , 25 , 26 ] has been employed in a Ho-doped fiber laser as artificial SAs. Moreover, hybrid mode-locking based on combining the two types of absorbers (NPE and single-walled carbon nanotubes (SWCNT)) in an all-fiber Ho-doped cavity has been demonstrated [ 27 , 28 ].…”

Section: Introductionmentioning

confidence: 99%

Dumbbell-Shaped Ho-Doped Fiber Laser Mode-Locked by Polymer-Free Single-Walled Carbon Nanotubes Saturable Absorber

et al. 2023

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We propose a simple dumbbell-shaped scheme of a Holmium-doped fiber laser incorporating a minimum number of optical elements. Mode-locking regimes were realized with the help of polymer-free single-walled carbon nanotubes (SWCNTs) synthesized using an aerosol (floating catalyst) CVD method. We show that such a laser scheme is structurally simple and more efficient than a conventional one using a ring cavity and a similar set of optical elements. In addition, we investigated the effect of SWCNT film transmittance, defined by the number of 40 nm SWCNT layers on the laser’s performance: operating regimes, stability, and self-starting. We found that three SWCNT layers with an initial transmittance of about 40% allow stable self-starting soliton mode-locking at a wavelength of 2076 nm with a single pulse energy of 0.6 nJ and a signal-to-noise ratio of more than 60 dB to be achieved.

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