Active Mid-Wave to Long-Wave Supercontinuum FTIR Sensor for Standoff Chemical Detection

Martinez, Ramon A.; Guo, Kaiwen; Zhai, Tianqu; Terry, Fred L.; Pierce, L.E.; Islam, M. N.; Gibson, Ricky; Reed, Jennifer M.; Bedford, Robert; Maksymiuk, Lukasz; Freeman, M. J.; Gorin, Brian A.; Christian, Noah P.; Ifarraguerri, Agustin I.

doi:10.1109/jlt.2019.2918532

Cited by 17 publications

(13 citation statements)

References 22 publications

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“…From a fundamental point of view, the overall objective is to strongly enhance the soliton self‐frequency shift (SSFS) using dispersion‐tailored highly nonlinear fiber segments to push forward the SC generation far in the mid‐IR. [ 29–31 ]…”

Section: Introductionmentioning

confidence: 99%

2–10 µm Mid‐Infrared Fiber‐Based Supercontinuum Laser Source: Experiment and Simulation

Venck¹,

St-Hilaire

Brilland³

et al. 2020

Laser & Photonics Reviews

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Mid‐infrared supercontinuum (mid‐IR SC) sources in the 2–20 µm molecular fingerprint region are in high demand for a wide range of applications including optical coherence tomography, remote sensing, molecular spectroscopy, and hyperspectral imaging. Herein, mid‐IR SC generation is investigated in a cascaded silica‐ZBLAN‐chalcogenide fiber system directly pumped with a commercially available pulsed fiber laser operating in the telecommunications window at 1.55 µm. This fiber‐based system is shown to generate a flat broadband mid‐IR SC covering the entire range from 2 to 10 µm with several tens of mW of output power. This technique paves the way for low cost, practical, and robust broadband SC sources in the mid‐IR without the requirement of mid‐infrared pump sources or Thulium‐doped fiber amplifiers. A fully realistic numerical model used to simulate the nonlinear pulse propagation through the cascaded fiber system is also described and the numerical results are used to discuss the physical processes underlying the spectral broadening in the cascaded system. Finally, recommendations are provided for optimizing the current cascaded system based on the simulation results.

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Section: Introductionmentioning

confidence: 99%

2–10 µm Mid‐Infrared Fiber‐Based Supercontinuum Laser Source: Experiment and Simulation

Venck¹,

St-Hilaire

Brilland³

et al. 2020

Laser & Photonics Reviews

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“…The lowest detectable methane concentration was 7.4 × 10 −8 using an As 2 Se 3 microfiber length of 1 cm. As 2 Se 3 is also used for the detection of active midwave–longwave supercontinuum Fourier transform infrared (FTIR) signals …”

Section: Introductionmentioning

confidence: 99%

Characterization of Au/As₂Se₃ Multifunctional Tunneling Devices

Qasrawi

2020

Physica Status Solidi (a)

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Herein, the physical design and characterization of the Au/As2Se3 Schottky barrier that is prepared under a vacuum pressure of 10−5 mbar are reported. The Schottky diodes are characterized by means of X‐ray diffraction, energy‐dispersive X‐ray spectroscopy, current–voltage characteristics, and conductivity, capacitance, and impedance spectroscopy. It is observed that the Schottky barriers exhibit a biasing‐dependent large rectification ratio with current conduction mechanisms dominated by the electric field‐assisted quantum mechanical tunneling through a barrier height of 0.29 eV and depletion width of 13.3 nm. While the spectral analysis of the alternating current (AC) conductivity reveals mixed conduction with the contribution of both of the tunneling and correlated barriers hopping mechanisms, the capacitance spectra display resonance–antiresonance phenomena at 0.201 GHz. A wide range (0.21–1.80 GHz) of negative capacitance (NC) effects is observed in devices. In addition, the impedance spectroscopy analyses show that the Au/As2Se3 devices exhibit band‐stop features with a notch frequency of 1.14 GHz and return loss value of 16 dB. The NC effect, resonance–antiresonance, filtering features, as well as the high rectification ratio at a relatively low biasing voltage (≈0.30 V) nominate the Au/As2Se3 devices for applications which require noise reduction, parasitic effect cancellations, and microwave filtering.

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“…In cascaded SC generation, an initial pulsed fiber laser at a wavelength of 1550 nm is progressively red-shifted in a cascade of silica and soft-glass fibers, enabling a stepwise extension towards the Mid-IR. From a fundamental point of view, the overall objective is to strongly enhance the soliton self-frequency shift (SSFS) using dispersion-tailored highly nonlinear fiber segments to push forward the SC generation far in the mid-IR [29][30][31].…”

Section: Introductionmentioning

confidence: 99%

Cascaded Fiber-based Mid-Infrared Supercontinuum Source

Sylvestre¹

2020

Preprint

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Mid-infrared supercontinuum (SC) sources in the 2 to 20 µm molecular fingerprint region are in high demand for a wide range of applications including optical coherence tomography, remote sensing, molecular spectroscopy, and hyperspectral imaging. In this work, we investigate mid-IR SC generation in a cascaded silica-ZBLAN-chalcogenide fiber system directly pumped with a commercially-available 460-ps pulsed fiber laser operating in the telecommunications window at 1.55 µm. This fiber-based system is shown to generate a flat broadband mid-IR SC covering the entire range from 2 to 10 µm with several tens of mW of output power. This technique paves the way for low cost, practical, and robust broadband SC sources in the mid-IR without the requirement of mid-infrared pump sources or Thulium-doped fiber amplifiers. We also describe a fully-realistic numerical model used to simulate the nonlinear pulse propagation through the cascaded fiber system and use our numerical results to discuss the physical processes underlying the spectral broadening in the cascaded system. We conclude with recommendations to optimize the current cascaded systems based on the simulation results.

show abstract

Active Mid-Wave to Long-Wave Supercontinuum FTIR Sensor for Standoff Chemical Detection

Cited by 17 publications

References 22 publications

2–10 µm Mid‐Infrared Fiber‐Based Supercontinuum Laser Source: Experiment and Simulation

2–10 µm Mid‐Infrared Fiber‐Based Supercontinuum Laser Source: Experiment and Simulation

Characterization of Au/As₂Se₃ Multifunctional Tunneling Devices

Cascaded Fiber-based Mid-Infrared Supercontinuum Source

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Active Mid-Wave to Long-Wave Supercontinuum FTIR Sensor for Standoff Chemical Detection

Cited by 17 publications

References 22 publications

2–10 µm Mid‐Infrared Fiber‐Based Supercontinuum Laser Source: Experiment and Simulation

2–10 µm Mid‐Infrared Fiber‐Based Supercontinuum Laser Source: Experiment and Simulation

Characterization of Au/As2Se3 Multifunctional Tunneling Devices

Cascaded Fiber-based Mid-Infrared Supercontinuum Source

Contact Info

Product

Resources

About

Characterization of Au/As₂Se₃ Multifunctional Tunneling Devices