Share Email Print
cover

Proceedings Paper

Experimental data on CO2 detection using Fabry-Perot-based optical setup for atmospheric observations
Author(s): Elena Georgieva; Emily Wilson; Mariusz Miodek; William S. Heaps
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

The experimental data on CO2 detection in atmosphere using Fabry-Perot technique are presented. The optical setup consists of two channels. Channel one measure the total reflected light, whereas channel two uses a solid substrate Fabry-Perot etalon to restrict measurement to light in CO2 absorption bands. The free spectral range of the etalon is calculated to be equal to the almost regular spacing between the CO2 spectral bands located near 1.58 μm, where CO2 absorption is significant. The ratio of the intensities detected by the two channels is then sensitive to CO2 change. We are exploring the temperature dependence of the index of refraction of the optical media to align the pass bands of the Fabry-Perot etalon to the appropriate CO2 absorption lines. The experimental data presented show excellent agreement with our theoretical expectations. They are recorded at different gas pressures and temperatures. Some of the major advantages of the optical setup are its compactness, high sensitivity, high signal-to-noise ratio, and stability.

Paper Details

Date Published: 3 November 2003
PDF: 9 pages
Proc. SPIE 5157, Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research V, (3 November 2003); doi: 10.1117/12.506008
Show Author Affiliations
Elena Georgieva, Science Systems and Applications, Inc. (United States)
Emily Wilson, National Research Council (United States)
NASA Goddard Space Flight Ctr. (United States)
Mariusz Miodek, Science Systems and Applications, Inc. (United States)
William S. Heaps, NASA Goddard Space Flight Ctr. (United States)


Published in SPIE Proceedings Vol. 5157:
Optical Spectroscopic Techniques and Instrumentation for Atmospheric and Space Research V
Allen M. Larar; Joseph A. Shaw; Zhaobo Sun, Editor(s)

© SPIE. Terms of Use
Back to Top