Demonstration of a highly sensitive photoacoustic spectrometer based on a miniaturized all-optical detecting sensor.
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DOI: 10.1364/oe.25.017541
Abstract: We report on the development of a highly sensitive photoacoustic (PA) spectrometer based on a miniaturized all-optical detecting sensor. The sensor has a cell volume of less than 6 μL and relies on a cantilever-based… read more here.
Keywords: sensitive photoacoustic; photoacoustic spectrometer; spectrometer based; highly sensitive ... See more keywords
Three-wavelength measurement of aerosol absorption using a multi-resonator coupled photoacoustic spectrometer.
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DOI: 10.1364/oe.412922
Abstract: Aerosol optical absorption measurements are important for the prediction of climate change, as aerosols directly disturb Earth's radiation balance by absorbing or scattering solar radiation. Although photoacoustic spectroscopy is commonly recognized as one of the… read more here.
Keywords: absorption; aerosol absorption; three wavelength; photoacoustic spectrometer ... See more keywords
Resonant photoacoustic spectrometer enhanced by multipass absorption for detecting atmospheric CH4 at the ppb-level
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DOI: 10.3389/fchem.2022.1021145
Abstract: A resonant photoacoustic spectrometer (PAS) was developed for detecting trace atmospheric CH4. The sensitivity of the PAS was significantly increased via a Herriott-type multipass cell with a beam pattern concentrated in the cavity. The effective… read more here.
Keywords: photoacoustic spectrometer; resonant photoacoustic; multipass; atmospheric ch4 ... See more keywords