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Conferences > OFS > 2023 > W6 > W6.5

Recirculating Sagnac-enhanced Photothermal Gas Detection with a Nanofiber as the Absorption cell

Yanzhen Tan, Shuangxiang Zhao, Shoulin Jiang, Hanyu Liao, and Wei Jin

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Abstract

We present a recirculating Sagnac-enhanced nanofiber photothermal sensor for trace gas detection. Experiments with a resonating cavity of finesse 34 demonstrated a detection limit of 74 ppb acetylene, ~6 times enhancement over the non-resonating sensor.

© 2023 The Author(s)

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