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Conferences > ES > 2022 > EM3D > EM3D.5

Broadband photothermal spectroscopy for gas sensing with two frequency combs

Qiang Wang, Zhen Wang, Hui Zhang, Shoulin Jiang, Yingying Wang, Wei Jin, and Wei Ren

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Abstract

We demonstrate scan-free broadband photothermal spectroscopy for gas sensing. The gas refractive index is modulated by the multiheterodyne beating of two frequency combs and demodulated by an in-line Fabry‐Pérot interferometer fabricated by a hollow-core fiber.

© 2022 The Author(s)

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