CO2 monitoring using a simple Fabry?Perot-based germanium bolometer
Sprache des Titels:
Englisch
Original Kurzfassung:
Wereport on the design, simulation and experimental characterization of a simple germanium bolometer
utilizing a Fabry?Perot absorbing structure, which can be used for monitoring, e.g., CO2 where no additional
filter is required. CO2 absorbs IR-radiation in a major band centered around a vacuum wavelength
of 4.26 micrometers. The selectivity of the whole sensor-configuration is mainly accomplished by the wavelengthresponse
associated with the Fabry?Perot structure. The analysis shows, that the designed bolometer has
an adequate response-function for the measurement of CO2 concentration. Combining the analysis for
the bolometer with ray tracing simulations for a connected sample chamber yields the response for an
entire IR-absorption sensor system which is proven to be in good agreement with measurements.
Forschungs-