Mode-locked all-fiber laser generating optical vortex pulses with tunable repetition rate

Chen, Rongshi; Sun, Fangling; Yao, Junna; Wang, J. H.; Ming, Hai; Wang, Anting; Zhan, Qiwen

doi:10.1063/1.5039566

Cited by 32 publications

(9 citation statements)

References 35 publications

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“…The range of values of the initial pulse parameters P and τ were discretized by 250×250 nodes. For each parameter pair (P, τ ) of the grid, the simulation of the dynamics of optical pulses with the form (28) injected into every core of the appropriate MCF was implemented. We tracked the first peak power maximum of the propagating pulse to get the compression or energy conversion at the minimum possible distance along the fiber.…”

Section: Compression and Energy Combining In 7-core Ring Mcfmentioning

confidence: 99%

“…In nonlinear media, optical vortices are treated as (topological) vortex solitary waves [2,11,26]. Such topologically stable pulses also can be used as information carriers [9,27,28]. We should note that while continuum vortex solitons are highly sensitive to azimuthal instability, stabilization and arresting this instability can be achieved by different means [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Optical vortices in waveguides with discrete and continuous rotational symmetry

Pryamikov

Hadžievski

Федорук

et al. 2021

J. Eur. Opt. Soc.-Rapid Publ.

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Coherent vortex structures are fascinating physical objects that are widespread in nature: from large scale atmospheric phenomena, such as tornadoes and the Great Red Spot of Jupiter to microscopic size topological defects in quantum physics and optics. Unlike classical vortex dynamics in fluids, optical vortices feature new interesting properties. For instance, novel discrete optical vortices can be generated in photonic lattices, leading to new physics. In nonlinear optical media, vortices can be treated as solitons with nontrivial characteristics currently studied under the emerging field of topological photonics. Parallel to theoretical advances, new areas of the engineering applications based on light vortices have emerged. Examples include the possibility of carrying information coded in the vortex orbital angular momentum, understood as a spatial-division-multiplexing scheme, to the creation of optical tweezers for efficient manipulation of small objects. This report presents an overview highlighting some of the recent advances in the field of optical vortices with special attention on discrete vortex systems and related numerical methods for modeling propagation in multi-core fibers.

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Section: Compression and Energy Combining In 7-core Ring Mcfmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Optical vortices in waveguides with discrete and continuous rotational symmetry

Pryamikov

Hadžievski

Федорук

et al. 2021

J. Eur. Opt. Soc.-Rapid Publ.

View full text Add to dashboard Cite

show abstract

“…It leads to numerous varieties of theoretical and experimental researches of OAM that the pioneered works discover optical vortex carrying topological phase singularity and spiral wave front [1,4,93,[141][142][143]. Previous reports on vortex fiber lasers are static generations, that is, the OAM beams with different topological cores are generated separately via manual adjustments [144,145]. To extend the flexibility of vortex fiber lasers, dual-resonant AOMC is employed to convert a switchable OAM laser beam [105].…”

Section: Dynamic Mode Switching Vortex Lasermentioning

confidence: 99%

Recent progress of dynamic mode manipulation via acousto-optic interactions in few-mode fiber lasers: mechanism, device and applications

Shi

et al. 2020

Nanophotonics

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The burgeoning advances of spatial mode conversion in few-mode fibers emerge as the investigative hotspot in novel structured light manipulation, in that, high-order modes possess a novel fundamental signature of various intensity profiles and unique polarization distributions, especially orbital angular momentum modes carrying with phase singularity and spiral wave front. Thus, control of spatial mode generation becomes a crucial technique especially in fiber optics, which has been exploited to high capacity space division multiplexing. The acousto-optic interactions in few-mode fibers provide a potential solution to tackle the bottleneck of traditional spatial mode conversion devices. Acousto-optic mode conversion controlled by microwave signals brings tremendous new opportunities in spatial mode generation with fast mode tuning and dynamic switching capabilities. Besides, dynamic mode switching induced by acousto-optic effects contributes an energy modulation inside a laser cavity through nonlinear effects of multi-mode interaction, competition, which endows the fiber laser with new functions and leads to the exploration of new physical mechanism. In this review, we present the recent advances of controlling mode switch and generation employing acousto-optic interactions in few-mode fibers, which includes acousto-optic mechanisms, optical field manipulating devices and novel applications of spatial mode control especially in high-order mode fiber lasers.

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“…The laser can emit rectangular pulses with duration tunable from 2.8 to 23 ns. In 2017, Chen et al demonstrated an all-fiber actively mode-locked laser producing CVB pulses with high efficiency and a tunable repetition rate, where a two-mode long-period fiber grating (TM-LPFG) was introduced into the laser cavity as a mode converter and a two-mode fiber Bragg grating (TM-FBG) is used as a mode selector [18]. In 2018, Wan et al proposed a passively mode-locked CVB fiber laser using a mode selective coupler (MSC) as the transverse mode converter and a semiconductor saturable absorber mirror (SESAM) for mode-locking [19].…”

Section: Introductionmentioning

confidence: 99%

All-Fiber High Efficiency Wavelength-Tunable Mode-Locked Cylindrical Vector Beam Laser

Lü

Yao

2022

IEEE Photonics J.

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A wavelength-tunable mode-locked cylindrical vector beam (CVB) fiber laser with a dumbbell-shaped structure was proposed and demonstrated experimentally. A homemade broadband long-period fiber grating (LPFG) and a high-birefringence Sagnac fiber loop work as mode converter and comb filter respectively. The mode-locking mechanism is based on the nonlinear polarization rotation (NPR) effect. The central wavelength can be tuned from 1023.257 nm to 1046.123 nm with mode-locked operating state. The laser has a high slope efficiency of 15.75% with the modelocking threshold value of 232.5 mW at the central wavelength of 1041.361 nm. The mode-locked CVB pulses have a repetition rate of 7.06 MHz with the duration of 107 picoseconds. Radially and azimuthally polarized beams can be obtained by eliminating the degeneracy of LP 11 mode, with the purity of 94.86%. This CVB laser with controllable operating wavelength may have potential applications in mode division multiplexed (MDM) systems, optical manipulation, and electron acceleration.

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Mode-locked all-fiber laser generating optical vortex pulses with tunable repetition rate

Cited by 32 publications

References 35 publications

Optical vortices in waveguides with discrete and continuous rotational symmetry

Optical vortices in waveguides with discrete and continuous rotational symmetry

Recent progress of dynamic mode manipulation via acousto-optic interactions in few-mode fiber lasers: mechanism, device and applications

All-Fiber High Efficiency Wavelength-Tunable Mode-Locked Cylindrical Vector Beam Laser

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