Near-infrared resonant photoacoustic gas measurement using simultaneous dual-frequency excitation

Rey, Julien; Römer, C.; Gianella, Michele; Sigrist, Markus W.

doi:10.1007/s00340-010-3994-x

Cited by 15 publications

(11 citation statements)

References 30 publications

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“…Hydrogel Sulfide (H 2 S) QCL [136] CO 2 Laser [130] LD [137][138][139] Water (H 2 O) QCL [125,140] LD [133,134,141] LED [142] Acetylene (C 2 H 2 ) CO 2 Laser [143] LD [87,144,145] Methane (CH 4 ) QCL [146][147][148] LD [87,133,146,149] OPO [150] Ozone (O 3 ) QCL [151] quadrupled Nd:YAG [152] Hydrogen Chloride (HCl) LD [149,153] Ethylene (C 2 H 4 ) CO 2 Laser [98] 3.2.3. Quartz-Enhanced and Cantilever Photoacoustic Absorption Spectroscopy Low-cost reliable MEMS devices often allow for advances in miniaturization and improvement of performances in originally unforeseen applications.…”

Section: Target Gas (Es) Light Source Referencementioning

confidence: 99%

Photoacoustic-Based Gas Sensing: A Review

Palzer

2020

Sensors

104

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The use of the photoacoustic effect to gauge the concentration of gases is an attractive alternative in the realm of optical detection methods. Even though the effect has been applied for gas sensing for almost a century, its potential for ultra-sensitive and miniaturized devices is still not fully explored. This review article revisits two fundamentally different setups commonly used to build photoacoustic-based gas sensors and presents some distinguished results in terms of sensitivity, ultra-low detection limits, and miniaturization. The review contrasts the two setups in terms of the respective possibilities to tune the selectivity, sensitivity, and potential for miniaturization.

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Section: Target Gas (Es) Light Source Referencementioning

confidence: 99%

Photoacoustic-Based Gas Sensing: A Review

Palzer

2020

Sensors

104

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“…The resonant photoacoustic technique based on infrared lasers is distinguished by a high sensitivity (the minimal detectable absorption of 10 -10 cm -1 can be attained at a time resolution of a few seconds) and capability to recognize reliably a large number of chemical compounds [5][6][7][8]. The technique has found successful exploitation for a large number of practical applications [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

A compact resonant Π-shaped photoacoustic cell with low window background for gas sensing

et al. 2014

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A resonant photoacoustic cell capable of detecting the traces of gases at an amplitude-modulation regime is represented. The cell is designed so as to minimize the window background for the cell operation at a selected acoustic resonance. A compact prototype cell (the volume of acoustic cavity of ~ 0.2 cm 3 , total cell weight of 3.5 g) adapted to the narrow diffraction-limited beam of near-infrared laser is produced and examined experimentally. The noise-associated measurement error and laser-initiated signals are studied as functions of modulation frequency. The background signal and useful response to light absorption by the gas are analyzed in measurements of absorption for ammonia traces in nitrogen flow with the help of a pigtailed DFB laser diode operated near a wavelength of 1.53 µm. The performance of absorption detection and gas-leak sensing for the prototype operated at the second longitudinal acoustic resonance (the resonance frequency of ~ 4.38 kHz, Q-factor of ~ 13.9) is estimated. The noise-equivalent absorption normalized to laser-beam power and detection bandwidth is ~ 1.4410 -9 cm -1 W Hz -1/2 . The amplitude of the window-background signal is equivalent to an absorption coefficient of ~ 2.8210 -7 cm -1 .

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“…Photoacoustic spectroscopy was successfully applied for gas detection [1], liquid measurements [2] or solid state investigations [3]. This method is based on acoustic wave generation resulting from the absorption of an intensity-modulated laser beam in the sample.…”

Section: Introductionmentioning

confidence: 99%

Comparison of the CRLC Models Describing the Helmholtz Type Cells for the Nondestructive Photoacoustic Spectroscopy

Chrobák¹,

Maliński²

2014

Metrology and Measurement Systems

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The photoacoustic cell is the heart of the nondestructive photoacoustic method. This article presents a new simple lumped-components CRLC model of the Helmholtz type photoacoustic cell. This model has been compared with the well known literature models describing the Helmholtz type cells for photoacoustic spectroscopy. Experimental amplitude and phase frequency data obtained for the two photoacoustic cells have been presented and interpreted in a series of models. Results of the fitting of theoretical curves, obtained in these models, to the experimental data have been shown and discussed.

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Near-infrared resonant photoacoustic gas measurement using simultaneous dual-frequency excitation

Cited by 15 publications

References 30 publications

Photoacoustic-Based Gas Sensing: A Review

Photoacoustic-Based Gas Sensing: A Review

A compact resonant Π-shaped photoacoustic cell with low window background for gas sensing

Comparison of the CRLC Models Describing the Helmholtz Type Cells for the Nondestructive Photoacoustic Spectroscopy

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