Electromechanical films as a photoacoustic transducer

A. Manninen; J. Sand; J. Saarela; T. Sorvajärvi; J. Toivonen; R. Hernberg

doi:10.1364/OE.17.016994

Electromechanical films as a photoacoustic transducer

A. Manninen, J. Sand, J. Saarela, T. Sorvajärvi, J. Toivonen, R. Hernberg

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Abstract

An electromechanical film, EMFi, is utilized as a transducer in a photoacoustic (PA) gas sensor. The film is a sensitive acoustic transducer, it is easily formable, and it exhibits a wide frequency response regardless of its large surface area. As a demonstration of its capabilities, the EMFi-based PA detector is used to measure NO2 with pulsed excitation at 436 and 473 nm. The minimum detectable absorption coefficient is extrapolated to be 5•10−7 cm−1. Improvements for EMFi-based PA detector are discussed.

Translated title of the contribution	Electromechanical films as a photoacoustic transducer
Original language	English
Pages (from-to)	16994-16999
Journal	Optics Express
Volume	17
Issue number	19
DOIs	https://doi.org/10.1364/OE.17.016994
Publication status	Published - 2009
Publication type	A1 Journal article-refereed

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10.1364/OE.17.016994

Manninen electromechanical film
Copyright 2009 The Optical Society

http://urn.fi/URN:NBN:fi:tty-201104152687

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AU - Sand, J.

AU - Saarela, J.

AU - Sorvajärvi, T.

AU - Toivonen, J.

AU - Hernberg, R.

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PY - 2009

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N2 - An electromechanical film, EMFi, is utilized as a transducer in a photoacoustic (PA) gas sensor. The film is a sensitive acoustic transducer, it is easily formable, and it exhibits a wide frequency response regardless of its large surface area. As a demonstration of its capabilities, the EMFi-based PA detector is used to measure NO2 with pulsed excitation at 436 and 473 nm. The minimum detectable absorption coefficient is extrapolated to be 5•10−7 cm−1. Improvements for EMFi-based PA detector are discussed.

AB - An electromechanical film, EMFi, is utilized as a transducer in a photoacoustic (PA) gas sensor. The film is a sensitive acoustic transducer, it is easily formable, and it exhibits a wide frequency response regardless of its large surface area. As a demonstration of its capabilities, the EMFi-based PA detector is used to measure NO2 with pulsed excitation at 436 and 473 nm. The minimum detectable absorption coefficient is extrapolated to be 5•10−7 cm−1. Improvements for EMFi-based PA detector are discussed.

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DO - 10.1364/OE.17.016994

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JO - Optics Express

JF - Optics Express

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Electromechanical films as a photoacoustic transducer

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