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

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

Research output: Contribution to journalArticleScientificpeer-review

25 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 languageEnglish
Pages (from-to)2933-2936
JournalOptics Letters
Volume40
Issue number13
DOIs
Publication statusPublished - 2015
MoE publication typeA1 Journal article-refereed

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photoacoustic spectroscopy
nitrogen dioxide
continuous wave lasers
absorptivity
acoustics
sensors

Cite this

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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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Parts-per-trillion-level detection of nitrogen dioxide by cantilever-enhanced photo-acoustic spectroscopy. / Peltola, Jari; Hieta, Tuomas (Corresponding Author); Vainio, Markku.

In: Optics Letters, Vol. 40, No. 13, 2015, p. 2933-2936.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Peltola, Jari

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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JF - Optics Letters

SN - 0146-9592

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