Digitally enhanced molecular dispersion spectroscopy

Digitally enhanced molecular dispersion spectroscopy

A frequency and intensity noise immune fiber dispersion spectrometer with a digitally enhanced homodyne P hase extraction system is presented. A hydrogen cyanide ((HCN)-C-13) vapor cell is placed in a digitally enhanced Sagnac interferometer, and the anomalous dispersion at the 1550.515 nm P11 trans...

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Veröffentlicht in:Optics letters 2020-11, Vol.45 (22), p.6290-6293
Hauptverfasser: Wong, Justin, Bandutunga, Chathura P., Zhang, Ya, Gray, Malcolm B., Chow, Jong H.
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Sprache:eng
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Dispersion
Hydrogen cyanide
Noise intensity
Noise sensitivity
Optics
Physical Sciences
Science & Technology
Tunable lasers
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container_end_page 6293
container_issue 22
container_start_page 6290
container_title Optics letters
container_volume 45
creator Wong, Justin
Bandutunga, Chathura P.
Zhang, Ya
Gray, Malcolm B.
Chow, Jong H.
description A frequency and intensity noise immune fiber dispersion spectrometer with a digitally enhanced homodyne P hase extraction system is presented. A hydrogen cyanide ((HCN)-C-13) vapor cell is placed in a digitally enhanced Sagnac interferometer, and the anomalous dispersion at the 1550.515 nm P11 transition is interrogated with a tunable laser. An analytical model of the dispersion induced phase readout shows close agreement with the experimentally obtained phase signal. Immunity to frequency and intensity noise confers sub-microradian phase sensitivity, corresponding to a spectroscopic detection limit of 77ppb x m/root Hz. (C) 2020 Optical Society of America
doi_str_mv 10.1364/OL.409721
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source Web of Science - Science Citation Index Expanded - 2020<img src="https://exlibris-pub.s3.amazonaws.com/fromwos-v2.jpg" />; Optica Publishing Group Journals
subjects Dispersion
Hydrogen cyanide
Noise intensity
Noise sensitivity
Optics
Physical Sciences
Science & Technology
Tunable lasers
title Digitally enhanced molecular dispersion spectroscopy
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