Graphene-Plasmonic Hybrid Metasurface Saturable Absorber

Rafique, Zubair Ebne; Basiri, Ali; Bai, Jing; Zuo, Jiawei; Yao, Yu

doi:10.1364/noma.2021.nom5b.3

Cited by 5 publications

(6 citation statements)

References 10 publications

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“…The magnitude of the modulation depth as well as the fluence where saturable absorption can be observed locates at the similar level as other nonlinear nanomaterials such as Bi 2 Se 3 [42]. For a higher modulation depth, one can design a novel plasmonic metasurface with stronger field enhancement, or introduce other nonlinear materials (like graphene [43]) into the pure gold nanostructures, to fabricate hybrid metasurfaces. Furthermore, we measured the nonlinear transmittance of the metasurface with L 2 = 230 nm for incident light with different linear polarization orientations, as shown in Fig.…”

Section: Characterization Of Gold Metasurfaces Samentioning

confidence: 83%

“…For example, metasurfaces could provide manipulation over phase [44], amplitude [45], polarization state [46], and even angular momentum [47] of light at the nanoscale. When in combination with highly nonlinear materials such as epsilon-near-zero materials and graphene [43], [48] etc, nonlinear metasurfaces could add unprecedented degrees of freedom to the ultrafast optics and photonics paradise. Our current work serves as an initial basis and nonlinear metasurfaces might move toward more complex spatial-temporal tailoring of light for more practical usage in the areas of nonlinear optics, integrated optics, and neuromorphic photonics.…”

Section: Discussionmentioning

confidence: 99%

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Gold Metasurfaces as Saturable Absorbers for All-Normal-Dispersion Ytterbium-Doped Mode-Locked Fiber Laser

et al. 2022

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Optical metasurfaces, i.e., thin planar structures with subwavelength metal or dielectric unit cells, have attracted great interest due to their intriguing capabilities of shaping light in both linear and nonlinear regimes. However, their saturable absorption properties and corresponding applications have so far been rarely exploited. Here we report on passively mode-locked ytterbiumdoped fiber lasers utilizing saturable metasurfaces made of periodically arranged gold nanorods. Three 400-nm-period metasurfaces with gold nanorods of different lengths (from 210 to 240 nm) and plasmonic resonances (from 968 to 1044 nm) are fabricated and found to exhibit nonlinear absorption with decent modulation depths, facilitating the formation of mode-locking states at 1060 nm. The corresponding lasers generate typically mode-locked pulses with the duration of ∼ 62.3 ps, repetition rate of 10.33 MHz, and signal-to-noise ratio of ∼74 dB. Our experimental results demonstrate that the gold nanorod-based metasurfaces can be used as relatively broadband mode-lockers in the 1-µm-wavelength range.

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Section: Characterization Of Gold Metasurfaces Samentioning

confidence: 83%

Section: Discussionmentioning

confidence: 99%

Gold Metasurfaces as Saturable Absorbers for All-Normal-Dispersion Ytterbium-Doped Mode-Locked Fiber Laser

et al. 2022

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“…4a, the normalized transmittance increased as the sample transferred to the focal point, which is clear evidence of the saturable absorption behavior of Nb 4 C 3 MXene nanosheets. 62 To estimate b eff , OA Z-scan signals were fitted to the equation: 63,64 T…”

Section: Nonlinear Optical Properties Of Nb 4 C 3 Mxenementioning

confidence: 99%

Third-order optical nonlinearities of Nb₄C₃ MXene and its application as an ultra-broadband mode-locker

Lee,

Kwon,

Choi

et al. 2024

J. Mater. Chem. C

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“…Se where 𝑓 𝑜 is the resonant frequency, 𝜀 is stored energy in the cavity, and 𝑃 = −𝑑𝐸/𝑑𝑡 is the power dissipated [38].…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Q-Switched Erbium Doped Fibre Laser with SWCNT-PVA Saturable Absorber of Different Ratios

Ooi Wei Ling,

Azura Hamzah,

Norliza Mohamed

et al. 2024

ARMNE

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This paper intends to compare the performance parameters of passive Q-switched erbium-doped fibre laser (EDFL) ring cavity configuration by employing SWCNT-PVA as a saturable absorber (SA). The single-wall carbon nanotube-polyvinyl alcohol (SWCNT-PVA) SA thin film fabricated by drop-casting technique is physically characterised to understand its surface morphology and thickness. The laser diode (LD) characterisation is attained to understand the attributes of LD before inserting the SWCNT-PVA into the ring cavity. The SWCNT-PVA SA of ratios 1:1, 3:2 and 2:3 is inserted into the cavity for analysis and comparison with each other. The pulses obtained from the Q-switched laser show that SWCNT-PVA SA of ratio 2:3 is the best SA as it possesses excellent power related parameters of the highest output power of 3.45 mW and highest pulse energy of 36.12 nJ with its moderate repetition rate of 96.25 kHz and pulse width 4.76 ms. The envisaged laser is presumed to have representational implications throughout fibre optic sensing, biosensors, range finding, and other fields for better possible prospects.

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Graphene-Plasmonic Hybrid Metasurface Saturable Absorber

Abstract: We demonstrate saturable absorption and ultrafast recovery of subwavelength (~λ/5) graphene-plasmonic hybrid metasurfaces. Measurements indicate a saturation fluence as low as 0.15μJ/cm2 and a recovery time <60fs at infrared wavelengths.

Cited by 5 publications

References 10 publications

Gold Metasurfaces as Saturable Absorbers for All-Normal-Dispersion Ytterbium-Doped Mode-Locked Fiber Laser

Gold Metasurfaces as Saturable Absorbers for All-Normal-Dispersion Ytterbium-Doped Mode-Locked Fiber Laser

Third-order optical nonlinearities of Nb₄C₃ MXene and its application as an ultra-broadband mode-locker

Comparative Study of Q-Switched Erbium Doped Fibre Laser with SWCNT-PVA Saturable Absorber of Different Ratios

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Graphene-Plasmonic Hybrid Metasurface Saturable Absorber

Abstract: We demonstrate saturable absorption and ultrafast recovery of subwavelength (~λ/5) graphene-plasmonic hybrid metasurfaces. Measurements indicate a saturation fluence as low as 0.15μJ/cm2 and a recovery time <60fs at infrared wavelengths.

Cited by 5 publications

References 10 publications

Gold Metasurfaces as Saturable Absorbers for All-Normal-Dispersion Ytterbium-Doped Mode-Locked Fiber Laser

Gold Metasurfaces as Saturable Absorbers for All-Normal-Dispersion Ytterbium-Doped Mode-Locked Fiber Laser

Third-order optical nonlinearities of Nb4C3 MXene and its application as an ultra-broadband mode-locker

Comparative Study of Q-Switched Erbium Doped Fibre Laser with SWCNT-PVA Saturable Absorber of Different Ratios

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Third-order optical nonlinearities of Nb₄C₃ MXene and its application as an ultra-broadband mode-locker