Ultra-broad Mid-IR Supercontinuum Generation in Single, Bi and Tri Layer Graphene Nano-Plasmonic waveguides pumping at Low Input Peak Powers

Bobba, Swetha S.; Agrawal, Arti

doi:10.1038/s41598-017-10141-3

Cited by 14 publications

(9 citation statements)

References 47 publications

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“…SRN/TiO 2 1.55 200 4000 1160-2380 (@ 20 db) 0.165 2020 [35] Reproduced with permission. [36] 2017, Nature.…”

Section: The Proposed Structure and Principlesmentioning

confidence: 99%

“…So far, only a few graphene-based waveguides have been regarded for SCG. [36,62] Supercontinuum generation in graphene waveguides has been investigated in. [36,62] A generic propagation equation has been derived in Ref.…”

Section: With Graphenementioning

confidence: 99%

“…[36,62] Supercontinuum generation in graphene waveguides has been investigated in. [36,62] A generic propagation equation has been derived in Ref. [62] using the perturbation expansion of Maxwell equations with the nonlinear boundary conditions.…”

Section: With Graphenementioning

confidence: 99%

“…Ref. [36] presents waveguides implementing single, bi-, and tri-layer graphene. The results showed that supercontinuum with the span of 1-10 μm and 0.85-2.2 μm are obtained for the proposed structures for peak powers of 2 and 0.1 W, respectively using a pump with the wavelength of 1.55 μm.…”

Section: With Graphenementioning

confidence: 99%

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Super‐Continuum Generation in Graphene‐Based Chalcogenide Slot Waveguide

et al. 2021

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Slot waveguides comprised of Ge 23 Sb 7 S 70 and Si with and without graphene are considered for super-continuum generation in the mid-infrared range. The dispersion characteristics are optimized for the proposed waveguides comprised of Si and Ge 23 Sb 7 S 70 chalcogenide as the core and cladding, respectively with and without graphene sheets embedded in the proposed structure. The proposed waveguide without graphene possesses all-normal dispersion and the super-continuum spectra with bandwidth of 1.75 µm is obtained for a pump with wavelength of 2 µm, peak power of 100 W, and time duration of 50 fs, at 20 dB level. Also, the total length of the waveguide is 8 mm. The optimized structure with three graphene sheets presents flat anomalous dispersion and the super-continuum spectra with bandwidth of 3 µm is obtained for a pump with wavelength, peak power, and time duration of 3 µm, 7 mW, and 50 fs, respectively at 10 dB level. It is demonstrated that the proper dispersion region for super-continuum generation depends on the sign of Kerr-index of the nonlinear material. The proposed waveguides are highly compatible with fabrication technologies for mid infrared applications. IntroductionRecently, super-continuum generation (SCG) has attracted a great deal of interest in the design of broadband optical sources. [1] SCG originates from the interaction between diverse nonlinear and linear effects. The nonlinear effects include self-phase modulation (SPM), [2] cross-phase modulation, [3] soliton formation, [4] soliton fission (SF), stimulated Raman scattering, [5] four-wave mixing (FWM), [6,7] and the main linear characteristics are the dispersion and loss. SCG is applicable in optical coherence tomography, spectroscopy, high-precision frequency metrology, and pulse

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“…SRN/TiO 2 1.55 200 4000 1160-2380 (@ 20 db) 0.165 2020 [35] Reproduced with permission. [36] 2017, Nature.…”

Section: The Proposed Structure and Principlesmentioning

confidence: 99%

Section: With Graphenementioning

confidence: 99%

Section: With Graphenementioning

confidence: 99%

Section: With Graphenementioning

confidence: 99%

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Super‐Continuum Generation in Graphene‐Based Chalcogenide Slot Waveguide

et al. 2021

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“…Additionally, mid-IR supercontinuum light sources are expected to have various potential applications including bio-photonic diagnostics, flow cytometry, nonlinear spectroscopy, and infrared imaging [2][3][4][5] . Earlier, several optical fiber and waveguide structures have been reported for broadband mid-IR supercontinuum spectrum [6][7][8][9][10][11][12][13][14][15][16][17][18] . For lots of the potential applications an intense, coherent, broadband, and compact mid-IR supercontinuum light sources are essential 2,[19][20][21] .…”

mentioning

confidence: 99%

Coherent Mid-IR Supercontinuum Generation using Tapered Chalcogenide Step-Index Optical Fiber: Experiment and modelling

Saini

Tuan

Suzuki

et al. 2020

Sci Rep

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Mid-infrared region of electromagnetic spectrum has increased a lot of scientific and technical interest because of its utility to figure out the molecular fingerprints. Current mid-infrared light sources including quantum cascade lasers, thermal-emitters, and synchrotron radiation are not suitable for various potential applications where we require coherent, portable and broadband light sources. During the current decade, several efforts have been put forwarded to extend the spectral range of the supercontinuum. However, the coherent mid-infrared supercontinuum spectrum in the mid-infrared region has been demonstrated rarely. Here, we demonstrate a coherent mid-infrared supercontinuum using a tapered chalcogenide fiber pumped at various wavelength ranging from 2 µm to 2.6 µm. Experimental observations show that the supercontinuum spectrum extending from ~1.6 µm to 3.7 µm can be achieved using a 3 cm long tapered chalcogenide step-index optical fiber pumped with femtosecond laser pulses at 2.6 µm. To the best of our knowledge, using short pump wavelengths at 2 µm to 2.6 µm in an all-normal dispersion engineered chalcogenide glass fiber, the coherent supercontinuum spectrum has been reported first time. Such coherent broadband light source has its key prominence for the various prospective applications in the fields of bio-medical, sensing, and multiplex coherent anti-Stokes Raman scattering microspectroscopy.

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Hybrid Graphene–Silicon Photonic and Optoelectronic Integrated Devices

Cheng

Wang

2019

Handbook of Graphene

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Ultra-broad Mid-IR Supercontinuum Generation in Single, Bi and Tri Layer Graphene Nano-Plasmonic waveguides pumping at Low Input Peak Powers

Cited by 14 publications

References 47 publications

Super‐Continuum Generation in Graphene‐Based Chalcogenide Slot Waveguide

Super‐Continuum Generation in Graphene‐Based Chalcogenide Slot Waveguide

Coherent Mid-IR Supercontinuum Generation using Tapered Chalcogenide Step-Index Optical Fiber: Experiment and modelling

Hybrid Graphene–Silicon Photonic and Optoelectronic Integrated Devices

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