Near-infrared gas spectroscopy based on plasmonic photodetector applied for multiple gas species
Utana Yamaoka,
Yuuki Kaneda,
Masaaki Oshita
et al.
Abstract:We proposed a near-infrared spectroscopy system that measures multiple types of gases using a plasmonic photodetector. We formed a gold diffraction grating on a silicon substrate to create a plasmonic photodetector and conducted gas spectral measurements in the near-infrared region. As a result, we could measure the transmission spectrum of water vapor gas at a concentration of 2%. Furthermore, we could measure ethanol gas transmittance at different concentrations of 4.5% and 2.7%, and change in transmission d… Show more
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