Dual interband cascade laser based trace-gas sensor for environmental monitoring

• DOI: 10.1364/ao.46.008202
• Publication Date: 2008-04-15T15:10:44Z
• Authors: Gerard Wysocki; Yury Bakhirkin; Stephen So; Frank K. Tittel; Cory J. Hill; Rui Q. Yang; Matthew P. Fraser
• Keywords: Trace gas; Crosstalk; Parts-per notation; Quantum cascade laser

The development of an interband cascade laser (ICL) based spectroscopic trace-gas sensor for the simultaneous detection two atmospheric trace gases is reported. performance was evaluated using ICLs capable targeting formaldehyde (H2CO) and ethane (C2H6). Minimum limits 3.5 ppbV H2CO 150 pptV C2H6 demonstrated with a 1 s integration time. deployed field measurements H2CO, laboratory quantification both are A cross comparison concentration data collected by collocated commercial employing Hantzsch reaction fluorometric performed. These results show excellent agreement between these different approaches quantification. In addition, experiments dual gas accurate, fast response no crosstalk channels.