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- W2903812734 abstract "The mid-infrared (mid-IR) spectral region holds great promise for new laser-based sensing technologies, based on measuring strong mid-IR molecular absorption features. Practical applications have been limited to date, however, by current low-brightness broadband mid-IR light sources and slow acquisition-time detection systems. Here, we report a new approach by developing a swept-wavelength mid-infrared fiber laser, exploiting the broad emission of dysprosium and using an acousto-optic tunable filter to achieve electronically controlled swept-wavelength operation from 2.89 to 3.25 {mu}m (3070-3460 cm^-1). Ammonia (NH3) absorption spectroscopy is demonstrated using this swept source with a simple room-temperature single-pixel detector, with 0.3 nm resolution and 40 ms acquisition time. This creates new opportunities for real-time high-sensitivity remote sensing using simple, compact mid-IR fiber-based technologies." @default.
- W2903812734 created "2018-12-22" @default.
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- W2903812734 date "2019-02-01" @default.
- W2903812734 modified "2023-10-16" @default.
- W2903812734 title "Swept-wavelength mid-infrared fiber laser for real-time ammonia gas sensing" @default.
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- W2903812734 doi "https://doi.org/10.1063/1.5065415" @default.
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