Parts-per-trillion-level detection of nitrogen dioxide by cantilever-enhanced photo-acoustic spectroscopy

Jari Peltola; Tuomas Hieta; Markku Vainio

doi:10.1364/OL.40.002933

Parts-per-trillion-level detection of nitrogen dioxide by cantilever-enhanced photo-acoustic spectroscopy

Jari Peltola, Tuomas Hieta (Corresponding Author), Markku Vainio

University of Helsinki

Research output: Contribution to journal › Article › Scientific › peer-review

54 Citations (Scopus)

Abstract

We present a simple and highly sensitive cantileverenhanced photo-acoustic sensor for detection of nitrogen dioxide. A noise equivalent detection limit of 50 parts-per-trillion in 1 s is demonstrated. The limit was reached with an average optical power of 4.7 W using a continuous-wave laser at 532 nm. The achieved normalized noise equivalent absorption coefficient was 2.6 ¡Á 10.10 Wcm.1 Hz.1 M2.

Original language	English
Pages (from-to)	2933-2936
Journal	Optics Letters
Volume	40
Issue number	13
DOIs	https://doi.org/10.1364/OL.40.002933
Publication status	Published - 2015
MoE publication type	A1 Journal article-refereed

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abstract = "We present a simple and highly sensitive cantileverenhanced photo-acoustic sensor for detection of nitrogen dioxide. A noise equivalent detection limit of 50 parts-per-trillion in 1 s is demonstrated. The limit was reached with an average optical power of 4.7 W using a continuous-wave laser at 532 nm. The achieved normalized noise equivalent absorption coefficient was 2.6 ¡{\'A} 10.10 Wcm.1 Hz.1 M2.",

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AU - Hieta, Tuomas

AU - Vainio, Markku

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PY - 2015

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AB - We present a simple and highly sensitive cantileverenhanced photo-acoustic sensor for detection of nitrogen dioxide. A noise equivalent detection limit of 50 parts-per-trillion in 1 s is demonstrated. The limit was reached with an average optical power of 4.7 W using a continuous-wave laser at 532 nm. The achieved normalized noise equivalent absorption coefficient was 2.6 ¡Á 10.10 Wcm.1 Hz.1 M2.

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DO - 10.1364/OL.40.002933

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JO - Optics Letters

JF - Optics Letters

IS - 13

ER -

Parts-per-trillion-level detection of nitrogen dioxide by cantilever-enhanced photo-acoustic spectroscopy

Abstract

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