Parallel gas spectroscopy using mid-infrared supercontinuum from a single Si3N4 waveguide

Tagkoudi, Eirini; Grassani, Davide; Yang, Fan; Herkommer, Clemens; Kippenberg, Tobias J.; Brès, Camille‐Sophie

doi:10.1364/ol.390086

Cited by 29 publications

(14 citation statements)

References 16 publications

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“…The MIR source generated was successfully used for detection of C 2 H 2 by absorption spectroscopy. On the same Si 3 N 4 platform, in 2020, Tagkoudi et al experimentally broadened the reachable spectral range of dispersive wave through careful optimization [114]. As a result, the dispersive wave can span the entire 3 ∼ 3.5 µm window without losing conversion efficiency.…”

Section: Supercontinuum and Frequency Comb Generationmentioning

confidence: 99%

ADVANCED PROGRESS ON Χ(3) NONLINEARITY IN CHIP-SCALE PHOTONIC PLATFORMS (INVITED REVIEW)

Kang

Mei

Zhang

et al. 2021

PIER

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χ (3) nonlinearity enables ultrafast femtosecond scale light-to-light coupling and manipulation of intensity, phase, and frequency. χ (3) nonlinear functionality in micro-and nanoscale photonic waveguides can potentially replace bulky fiber platforms for many applications. In this Review, we summarize and comment on the progress on χ (3) nonlinearity in chip-scale photonic platforms, including several focused hot topics such as broadband and coherent sources in the new bands, nonlinear pulse shaping, and all-optical signal processing. An outlook of challenges and prospects on this hot research field is given at the end.

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Section: Supercontinuum and Frequency Comb Generationmentioning

confidence: 99%

ADVANCED PROGRESS ON Χ(3) NONLINEARITY IN CHIP-SCALE PHOTONIC PLATFORMS (INVITED REVIEW)

Kang

Mei

Zhang

et al. 2021

PIER

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“…By pumping the waveguide with a 2 μm modelocked fiber laser, DW generated at 3.05 μm with a recordhigh conversion efficiency of 35 % was achieved, along with the output power up to milliwatt level [5]. In addition, Tagkoudi et al further engineered the dispersion of the "tophat" waveguide to broaden the coverage of the DW without sacrificing the conversion efficiency, and thus enabling parallel gas spectroscopy [10], etc. However, despite the good performances have been shown, the fabrication of low loss and thick Si3N4 waveguide beyond 400 nm height is still difficult.…”

Section: Introductionmentioning

confidence: 99%

Tunable Mid-Infrared Dispersive Wave Generation of High-Efficiency and Broadband in a Suspended Thin-Film Lithium-Niobate-on-Insulator Waveguide

Jia

Kang

2021

IEEE Access

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A suspended thin-film lithium-niobate-on-insulator nano-waveguide (NanoLN) is designed and efficient as well as broadband dispersive wave generation in this platform is studied numerically. By hollowing out the silicon dioxide substrate between the NanoLN core and silicon wafer, the loss issue induced by mode leaking at mid-infrared region is eliminated. The second zero-dispersion wavelength of the suspended NanoLN is tailored to locate around 2 μm wavelength, so that mode-locked fiber laser pump sources in this waveband can be conveniently leveraged to generate dispersive wave beyond 3 μm wavelength. We show that dispersive wave at 3.16 μm with high conversion efficiency up to 36.26 % and bandwidth (at -10 dB level) of ~ 471 nm can be achieved at the pump pulse energy of 0.23 nJ. The central wavelength of the dispersive wave can be flexibly tuned up to 5 μm with a maximum -10 dB bandwidth of ~ 2 μm by lithographic control of the waveguide geometry, which is naturally at the expense of degraded conversion efficiency. Our results show the suspended NanoLN can provide a versatile chip-scale platform for cost-effective mid-infrared targetable, broadband, and coherent sources generation. The benefit of using fiber laser pump sources shows the potential of field-deployable (out of the lab) applications.

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“…Multilayer waveguide structures have been proposed to flatten waveguide dispersion with multiple zero dispersion wavelengths (ZDWs), which can be used to generate broadband SC [11,12]. Moreover, soliton-induced dispersive wave (DW) generation is an ideal mechanism that can coherently and efficiently broaden SC over a large frequency span [13] and enable ultrabroadband SCG without complex waveguide structures [7,14,15]. In addition, the mode at longer wavelengths expands significantly outside of the waveguide and does not overlap well with that at shorter wavelengths.…”

Section: Introductionmentioning

confidence: 99%

On-Chip Broadband Mid-Infrared Supercontinuum Generation Based on Highly Nonlinear Chalcogenide Glass Waveguides

et al. 2021

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On-chip mid-infrared (MIR) supercontinuum generation (SCG) covering the molecular functional spectral region (3–12 μm) offers the advantages of robustness, simplicity, and compactness. Yet, the spectral range still cannot be expanded beyond 10 μm. In this study, on-chip ultrabroadband MIR SCG in a high numerical aperture chalcogenide (ChG) waveguide is numerically investigated. The ChG waveguide with a Ge-As-Se-Te core and Ge-Se upper and lower cladding is designed to optimize the nonlinear coefficients and dispersion profile. Assisted by dispersive wave generation in both short- and long-wavelength range, broadband SCG ranging from 2 to 13 µm is achieved. Besides, a fabrication scheme is proposed to realize precise manipulation of dispersion design. Such results demonstrate that such sources are suitable for compact, chip-integrated molecular spectroscopy applications.

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Parallel gas spectroscopy using mid-infrared supercontinuum from a single Si₃N₄ waveguide

Cited by 29 publications

References 16 publications

ADVANCED PROGRESS ON Χ<SUP>(3)</SUP> NONLINEARITY IN CHIP-SCALE PHOTONIC PLATFORMS (INVITED REVIEW)

ADVANCED PROGRESS ON Χ<SUP>(3)</SUP> NONLINEARITY IN CHIP-SCALE PHOTONIC PLATFORMS (INVITED REVIEW)

Tunable Mid-Infrared Dispersive Wave Generation of High-Efficiency and Broadband in a Suspended Thin-Film Lithium-Niobate-on-Insulator Waveguide

On-Chip Broadband Mid-Infrared Supercontinuum Generation Based on Highly Nonlinear Chalcogenide Glass Waveguides

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