4 February 2013 CW DFB RT diode laser based sensor for trace-gas detection of ethane using novel compact multipass gas absorption cell
Author Affiliations +
Abstract
The development of a continuous wave (CW), thermoelectrically cooled (TEC), distributed feedback (DFB) laser diode based spectroscopic trace-gas sensor for ultra sensitive and selective ethane (C2H6) concentration measurements is reported. The sensor platform used tunable laser diode absorption spectroscopy (TDLAS) and wavelength modulation spectroscopy (WMS) as the detection technique. TDLAS was performed with an ultra-compact 57.6 m effective optical path length innovative spherical multipass cell capable of 459 passes between two mirrors separated by 12.5 cm. For an interference free C2H6 absorption line located at 2976.8 cm-1 a 1σ minimum detection limit of 130 pptv with a 1 second lock-in amplifier time constant was achieved.
© (2013) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Mohammad Jahjah, Mohammad Jahjah, Rafal Lewicki, Rafal Lewicki, Frank K. Tittel, Frank K. Tittel, Karol Krzempek, Karol Krzempek, Przemyslaw Stefanski, Przemyslaw Stefanski, Stephen So, Stephen So, David Thomazy, David Thomazy, } "CW DFB RT diode laser based sensor for trace-gas detection of ethane using novel compact multipass gas absorption cell ", Proc. SPIE 8631, Quantum Sensing and Nanophotonic Devices X, 86312G (4 February 2013); doi: 10.1117/12.2004528; https://doi.org/10.1117/12.2004528
PROCEEDINGS
7 PAGES


SHARE
Back to Top