Gaseous Oxygen Detection Using Hollow-Core Fiber-Based Linear Cavity Ring-Down Spectroscopy
- We demonstrate a method for the calibration-free and quantitative analysis of small volumes of gaseous samples. A 10 m hollow-core photonic bandgap fiber is used as the sample cell (volume = 0.44 mu L) and is placed inside a linear resonator setup. The application of cavity ring-down spectroscopy and in consideration of rather small coupling losses, this leads to an increased effective optical path length of up to 70 m. This implies a volume per optical interaction path length of 6.3 nL.m(-1). We used tunable diode laser spectroscopy at 760 nm and scanned the absorption for oxygen sensing. The optical loss due to sample absorption is obtained by measuring the ring-down time of light propagating inside the cavity. The resultant absorption coefficient shows a discrepancy of only 5.1% comparing to the HITRAN database. This approach is applicable for sensitive measurements if only submicroliter sample volumes are available.
Verfasserangaben: | Dorit Munzke, Michael Böhm, Oliver ReichGND |
---|---|
DOI: | https://doi.org/10.1109/JLT.2015.2397177 |
ISSN: | 0733-8724 |
ISSN: | 1558-2213 |
Titel des übergeordneten Werks (Englisch): | Journal of lightwave technology |
Verlag: | Inst. of Electr. and Electronics Engineers |
Verlagsort: | Piscataway |
Publikationstyp: | Wissenschaftlicher Artikel |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2015 |
Erscheinungsjahr: | 2015 |
Datum der Freischaltung: | 27.03.2017 |
Freies Schlagwort / Tag: | Cavity ring-down spectroscopy; gas sensing; hollow-core photonic bandgap fiber; oxygen |
Band: | 33 |
Ausgabe: | 12 |
Seitenanzahl: | 6 |
Erste Seite: | 2524 |
Letzte Seite: | 2529 |
Fördernde Institution: | German Federal Ministry for Education and Research [03Z2AN12] |
Organisationseinheiten: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Chemie |
Peer Review: | Referiert |