Cavity-enhanced cantilever-enhanced photo-acoustic spectroscopy

Research output: Contribution to journalArticleScientificpeer-review

Abstract

We have improved the sensitivity of a state-of-the-art cantilever-enhanced photo-acoustic trace gas sensor by combining it with an optical power build-up cavity. The build-up cavity enhances the photo-acoustic signal by a factor of approximate to 100, resulting in an exceptionally good normalised noise equivalent absorption (NNEA) value of 1.75 x 10(-12) W cm(-1) Hz(-1/2). We demonstrate the sensor platform in the 1530 nm wavelength range with a simple distributed feedback diode laser, achieving 75 ppt sensitivity for C2H2 with a 10 s integration time.

Original languageEnglish
JournalAnalyst
Volume144
Issue number7
Pages (from-to)2291-2296
Number of pages6
ISSN0003-2654
DOIs
Publication statusPublished - 7 Apr 2019
MoE publication typeA1 Journal article-refereed

Fields of Science

  • 116 Chemical sciences

Cite this

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title = "Cavity-enhanced cantilever-enhanced photo-acoustic spectroscopy",
abstract = "We have improved the sensitivity of a state-of-the-art cantilever-enhanced photo-acoustic trace gas sensor by combining it with an optical power build-up cavity. The build-up cavity enhances the photo-acoustic signal by a factor of approximate to 100, resulting in an exceptionally good normalised noise equivalent absorption (NNEA) value of 1.75 x 10(-12) W cm(-1) Hz(-1/2). We demonstrate the sensor platform in the 1530 nm wavelength range with a simple distributed feedback diode laser, achieving 75 ppt sensitivity for C2H2 with a 10 s integration time.",
keywords = "116 Chemical sciences",
author = "Tomberg, {Teemu Joonatan} and Tuomas Hieta and Vainio, {Markku Mikael} and Halonen, {Lauri Olavi}",
year = "2019",
month = "4",
day = "7",
doi = "10.1039/C9AN00058E",
language = "English",
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pages = "2291--2296",
journal = "Analyst",
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publisher = "The Royal Society of Chemistry",
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Cavity-enhanced cantilever-enhanced photo-acoustic spectroscopy. / Tomberg, Teemu Joonatan; Hieta, Tuomas; Vainio, Markku Mikael; Halonen, Lauri Olavi.

In: Analyst, Vol. 144, No. 7, 07.04.2019, p. 2291-2296.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Cavity-enhanced cantilever-enhanced photo-acoustic spectroscopy

AU - Tomberg, Teemu Joonatan

AU - Hieta, Tuomas

AU - Vainio, Markku Mikael

AU - Halonen, Lauri Olavi

PY - 2019/4/7

Y1 - 2019/4/7

N2 - We have improved the sensitivity of a state-of-the-art cantilever-enhanced photo-acoustic trace gas sensor by combining it with an optical power build-up cavity. The build-up cavity enhances the photo-acoustic signal by a factor of approximate to 100, resulting in an exceptionally good normalised noise equivalent absorption (NNEA) value of 1.75 x 10(-12) W cm(-1) Hz(-1/2). We demonstrate the sensor platform in the 1530 nm wavelength range with a simple distributed feedback diode laser, achieving 75 ppt sensitivity for C2H2 with a 10 s integration time.

AB - We have improved the sensitivity of a state-of-the-art cantilever-enhanced photo-acoustic trace gas sensor by combining it with an optical power build-up cavity. The build-up cavity enhances the photo-acoustic signal by a factor of approximate to 100, resulting in an exceptionally good normalised noise equivalent absorption (NNEA) value of 1.75 x 10(-12) W cm(-1) Hz(-1/2). We demonstrate the sensor platform in the 1530 nm wavelength range with a simple distributed feedback diode laser, achieving 75 ppt sensitivity for C2H2 with a 10 s integration time.

KW - 116 Chemical sciences

U2 - 10.1039/C9AN00058E

DO - 10.1039/C9AN00058E

M3 - Article

VL - 144

SP - 2291

EP - 2296

JO - Analyst

JF - Analyst

SN - 0003-2654

IS - 7

ER -