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2006•Optica ApplicataRequires access

Sensitive detection of NO 2 with cavity enhanced spectroscopy

J. Wojtas, Adam Czyżewski, T. Stacewicz, Z. Bielecki

Open publisher page 26 citations

Abstract

We present an experiment with nitrogen dioxide (NO2) detection with the use of cavity enhanced spectroscopy. The pulsed blue diode laser working at 414 nm as a light source was applied. The cavity was composed of two mirrrors with the reflectivity of R = 0.99992. The off-axis adjustment of the resonator was used. The absorbing gas concentration was determined by the measurement of the decay time of the light pulse trapped in the cavity. The detection limit better than 1 ppb was obtained.

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What this paper is about

We present an experiment with nitrogen dioxide (NO2) detection with the use of cavity enhanced spectroscopy. The pulsed blue diode laser working at 414 nm as a light source was applied. The cavity was composed of two mirrrors with the reflectivity of R = 0.99992. The off-axis adjustment of the resonator was used. The absorbing gas concentration was determined by the measurement of the decay time of the light pulse trapped in the cavity. The detection limit better than 1 ppb was obtained.

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Available abstract

We present an experiment with nitrogen dioxide (NO2) detection with the use of cavity enhanced spectroscopy. The pulsed blue diode laser working at 414 nm as a light source was applied. The cavity was composed of two mirrrors with the reflectivity of R = 0.99992. The off-axis adjustment of the resonator was used. The absorbing gas concentration was determined by the measurement of the decay time of the light pulse trapped in the cavity. The detection limit better than 1 ppb was obtained.

Key concepts: Materials science, Spectroscopy, Detection limit, Optical cavity, Cavity ring-down spectroscopy, Optics, Resonator, Optoelectronics

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