Intensity modulated photothermal measurements of NO2 with a compact fiber-coupled fabry–pérot interferometer

Philipp Breitegger*, Benjamin Lang, Alexander Bergmann

*Korrespondierende/r Autor/in für diese Arbeit

    Publikation: Beitrag in einer FachzeitschriftArtikel

    Abstract

    Sensors for the reliable measurement of nitrogen dioxide concentrations are of high interest due the adverse health effects of this pollutant. This work employs photothermal spectroscopy to measure nitrogen dioxide concentrations at the parts per billion level. Absorption induced temperature changes are detected by means of a fiber-coupled Fabry–Pérot interferometer. The small size of the interferometer enables small detection volumes, paving the way for miniaturized sensing concepts as well as fast response times, demonstrated down to 3 s. A normalized noise equivalent absorption of 7.5 × 10−8 cm−1W/ Hz is achieved. Additionally, due to the rigid structure of the interferometer, the sensitivity to mechanical vibrations is shown to be minor.

    Originalspracheenglisch
    Aufsatznummer3341
    FachzeitschriftSensors
    Jahrgang19
    Ausgabenummer15
    DOIs
    PublikationsstatusVeröffentlicht - 1 Aug 2019

    ASJC Scopus subject areas

    • Analytische Chemie
    • !!Biochemistry
    • !!Atomic and Molecular Physics, and Optics
    • !!Instrumentation
    • !!Electrical and Electronic Engineering

    Fingerprint

    Untersuchen Sie die Forschungsthemen von „Intensity modulated photothermal measurements of NO<sub>2</sub> with a compact fiber-coupled fabry–pérot interferometer“. Zusammen bilden sie einen einzigartigen Fingerprint.

    Dieses zitieren