Apodization in dual-comb spectroscopy for rapid measurement
Laser Applications to Chemical, Security and Environmental Analysis, 2020•opg.optica.org
… Dual-comb spectroscopy (DCS), a technique based on two lasers with slightly detuned
repetition rate to interrogate a sample and down-convert the optical information to the
electrical domain, has gained in popularity in the last decade. This method allows
broadband … The spectral point spacing of most dual-comb spectrometers is defined by
their repetition rates and is typically on the order of tens to hundreds of MHz [1]. However,
absorption features’ width of volatile compounds at atmospheric pressure are typically in the …
repetition rate to interrogate a sample and down-convert the optical information to the
electrical domain, has gained in popularity in the last decade. This method allows
broadband … The spectral point spacing of most dual-comb spectrometers is defined by
their repetition rates and is typically on the order of tens to hundreds of MHz [1]. However,
absorption features’ width of volatile compounds at atmospheric pressure are typically in the …
Abstract
We add optical referencing to a technique interrogating gas samples with two frequency combs by varying their repetition rate difference periodically. The reduce interferogram measurement time yields an improved SNR and an optimized resolution.
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