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Double Acoustic Microresonator Quartz-enhanced Photoacoustic Spectroscopy

Overview
Journal Opt Lett
Specialty Ophthalmology
Date 2014 Jul 1
PMID 24979023
Citations 15
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Abstract

Quartz-enhanced photoacoustic spectroscopy (QEPAS) based on double acoustic microresonators (AmRs) is developed and experimentally investigated. The double AmR spectrophone configuration exhibits a strong acoustic coupling between the AmR and the quartz tuning fork, which results in a ∼5  ms fast response time. Moreover, the double AmRs provide two independent detection channels that allow optical signal addition or cancellation from different optical wavelengths and facilitate rapid multigas sensing measurements, thereby avoiding laser beam combination.

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