Electromechanical film as a photoacoustic transducer | Zendy

Albert Manninen | Zendy; Johan Sand | Zendy; Jaakko Saarela | Zendy; Tapio Sorvajärvi | Zendy; Juha Toivonen | Zendy; Rolf Hernberg | Zendy

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Electromechanical film as a photoacoustic transducer

Author(s) -

Albert Manninen,

Johan Sand,

Jaakko Saarela,

Tapio Sorvajärvi,

Juha Toivonen,

Rolf Hernberg

Publication year - 2009

Publication title -

optics express

Language(s) - Uncategorized

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.17.016994

Subject(s) - transducer , materials science , detector , optics , photoacoustic imaging in biomedicine , attenuation coefficient , absorption (acoustics) , photoacoustic effect , photoacoustic spectroscopy , acoustics , physics

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 NO(2) 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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