Molecular Dispersion Spectroscopy Using a Code-Division-Multiplexed Optical Carrier

Justin Wong; Chathura P. Bandutunga; Priya Singh; Malcolm B. Gray; Jong H. Chow

doi:10.1103/PhysRevApplied.19.044027

Molecular Dispersion Spectroscopy Using a Code-Division-Multiplexed Optical Carrier

Justin Wong, Chathura P. Bandutunga, Priya Singh, Malcolm B. Gray, Jong H. Chow

Research output: Contribution to journal › Article › peer-review

2 Citations (Scopus)

Abstract

A fiber-optic molecular dispersion spectrometer using code-division multiplexing to make simultaneous phase measurements of a hydrogen cyanide (H13C14N) 2ν3-band P10 rovibrational transition at multiple optical frequencies is demonstrated. A second-derivative anomalous dispersion response is digitally synthesized from sets of these concurrent measurements. The synthesized measurement demonstrates 3 orders of magnitude noise suppression relative to individual measurements, has intrinsic wavelength tuning linearization, and a spectroscopic detection limit of 146ppbm/Hz.

Original language	English
Article number	044027
Journal	Physical Review Applied
Volume	19
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevApplied.19.044027
Publication status	Published - Apr 2023

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10.1103/PhysRevApplied.19.044027

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abstract = "A fiber-optic molecular dispersion spectrometer using code-division multiplexing to make simultaneous phase measurements of a hydrogen cyanide (H13C14N) 2ν3-band P10 rovibrational transition at multiple optical frequencies is demonstrated. A second-derivative anomalous dispersion response is digitally synthesized from sets of these concurrent measurements. The synthesized measurement demonstrates 3 orders of magnitude noise suppression relative to individual measurements, has intrinsic wavelength tuning linearization, and a spectroscopic detection limit of 146ppbm/Hz.",

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Molecular Dispersion Spectroscopy Using a Code-Division-Multiplexed Optical Carrier

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