Microfiber-based WS_2-film saturable absorber for ultra-fast photonics

Yan, Peiguang; Liu, Aijiang; Chen, Yu‐Shan; Chen, Hao; Ruan, Shuangchen; Guo, Chunyu; Chen, Sifan; Li, Irene Ling; Yang, Haipeng; Hu, Juguang; Cao, Guang-Zhong

doi:10.1364/ome.5.000479

Cited by 207 publications

(100 citation statements)

References 60 publications

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“…SA technology is presently predominated by semiconductor saturable absorber mirrors (SESAMs). [31][32][33] To date, carbon nanotubes (CNTs), [34,35] graphene, [36,37] MoS 2 , [38,39] WS 2 , [40] topological insulators (TIs) [41][42][43][44] and black phosphorus [45][46][47] have been successfully utilized as SA for the realization of mode-locking. Ultrashort pulses can be used in many areas, such as optical communication and spectroscopy.…”

Section: Wwwadvancedsciencenewscom Wwwlpr-journalorgmentioning

confidence: 99%

Few‐layer Bismuthene: Sonochemical Exfoliation, Nonlinear Optics and Applications for Ultrafast Photonics with Enhanced Stability

Liang

et al. 2017

Laser & Photonics Reviews

343

206

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As the last element in Group VA, bismuthene has garnered substantial interest for its unique electronic and mechanical properties and its enhanced stability. However, the mechanism that drives the light-bismuthene interaction remains completely unclear. Herein, a sonochemical exfoliation approach is employed to deliver a successful synthesis of few-layer bismuthene. The corresponding nonlinear optical response at the visible wavelength is investigated. The nonlinear refractive index is ß10 −6 cm 2 /W and was measured by spatial self-phase modulation. Thanks to its direct energy band-gap at 1550 nm, the saturable absorption property of bismuthene is experimentally illustrated at the telecommunication band with an optical modulation depth of ß2.03% and a saturable intensity of ß30 MW/cm 2 . The optimization of the laser parameters resulted in the generation of an ß652-femtosecond optical pulse centered at 1559.18 nm. This result indicates that the bismuthene-based saturable absorber is indeed a new and excellent material for an ultrafast saturable absorber device. Our work highlights the promise of this material in ultrafast photonics and may be considered as an important step towards bismuthene-based photonics devices (optical modulator, optical switcher, detector, etc.).

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Section: Wwwadvancedsciencenewscom Wwwlpr-journalorgmentioning

confidence: 99%

Few‐layer Bismuthene: Sonochemical Exfoliation, Nonlinear Optics and Applications for Ultrafast Photonics with Enhanced Stability

Liang

et al. 2017

Laser & Photonics Reviews

343

206

View full text Add to dashboard Cite

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“…Indeed, for many nonlinear absorption studies on TMD materials, the effect was not monotonic: under sufficiently high intensity, the material exhibited an increase in absorption for increasing intensity (i.e., reverse saturable absorption, RSA, or optical limiting) [33,42,54,56,60]. This RSA effect has been attributed to two-photon absorption (TPA), where under intense illumination, two photons can transfer their energy to excite a single electron over the bandgap, explaining why this effect has been observed for excitation wavelengths corresponding to photon energies less than the material bandgap, but greater than half the gap energy.…”

Section: Other Nonlinear Effectsmentioning

confidence: 99%

2D Saturable Absorbers for Fibre Lasers

2015

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Two-dimensional (2D) nanomaterials are an emergent and promising platform for future photonic and optoelectronic applications. Here, we review recent progress demonstrating the application of 2D nanomaterials as versatile, wideband saturable absorbers for Q-switching and mode-locking fibre lasers. We focus specifically on the family of few-layer transition metal dichalcogenides, including MoS 2 , MoSe 2 and WS 2 .

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“…To obtain ultrashort pulses, the laser generally require a saturable absorber to achieve the mode locking mechanism. Various approaches have been developed since the early days of ultrafast lasers including physical light intensity absorbers such as semiconductor saturable absorption mirrors (SESAMs) [6], [7], carbon nanotubes [8], [9], graphene [10], [11], topological insulators [12], [13], black phosphorous [14], [15], and most recently transition-metal dichalcogenides (TMDs) [16], [17]. However, these physical absorbers either have bandwidth limitation or stability issues.…”

Section: Introductionmentioning

confidence: 99%

Mode-Locked Erbium-Doped Fiber Lasers Using 45° Tilted Fiber Grating

Wang

Yan

Huang

et al. 2018

IEEE J. Select. Topics Quantum Electron.

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Abstract-We have systematically studied the 45° tilted fiber grating (45TFG) as a functional device for Erbium doped fiber laser (EDFL) mode locking. A number of 45TFGs with different polarization dependent loss (PDL) have been fabricated. Mode locked Erbium doped fiber laser using these devices have been characterized in terms of threshold, pulse duration, signal to noise ratio (SNR), and spectral width. Our results show that a 45TFG with higher PDL could achieve better laser results. By using a 45TFG with 24dB PDL, the mode locked laser has 8.1% conversion efficiency and a threshold of 200mW.

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Microfiber-based WS_2-film saturable absorber for ultra-fast photonics

Cited by 207 publications

References 60 publications

Few‐layer Bismuthene: Sonochemical Exfoliation, Nonlinear Optics and Applications for Ultrafast Photonics with Enhanced Stability

Few‐layer Bismuthene: Sonochemical Exfoliation, Nonlinear Optics and Applications for Ultrafast Photonics with Enhanced Stability

2D Saturable Absorbers for Fibre Lasers

Mode-Locked Erbium-Doped Fiber Lasers Using 45° Tilted Fiber Grating

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