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Conferences > CLEO_AT > 2021 > AM4P > AM4P.5

A Double-Pass Cavity-Enhanced Spectrometer with a Polarization Analyzed Readout

Yajie Guan, Chathura Bandutunga, Malcolm B. Gray, and Jong H. Chow

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Abstract

We describe a new optical cavity-enhanced spectroscopy technique which uses a polarization analyzed readout for molecular absorption. It has a double-pass cavity configuration which serves as both a spatial as well as frequency mode self-cleaner. We demonstrate a quantum noise-equivalent absorption sensitivity of ~3x10-13 /√Hz /cm, with a sample of carbon dioxide gas in a cavity of finesse ~2000.

© 2021 The Author(s)

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