A simple method to optimize the signal to noise ratio of gaseous photoacoustic systems

A. Scalabrin

doi:10.1117/12.2297910

1 October 1991 A simple method to optimize the signal to noise ratio of gaseous photoacoustic systems

A. Scalabrin

Proceedings Volume 1576, 16th International Conference on Infrared and Millimeter Waves; 15765H (1991) https://doi.org/10.1117/12.2297910
Event: 16th International Conference on Infrared and Millimeter Waves, 1991, Lausanne, Switzerland

Abstract

Measurements of small absorption coefficients of weakly absorbing or trace gas in the atmosphere has been one of the most important applications of photoacoustic devices. Normally, the major factor limiting the sensitivity of these systems is the spurious signal produced by the heating of the cell windows. We present a simple photoacoustic configuration that eliminate the spurious window and external background signals and enhance the main (real) signal of infrared gaseous photoacoustic systems, optimizing the signal to noise ratio.

Citation Download Citation

A. Scalabrin "A simple method to optimize the signal to noise ratio of gaseous photoacoustic systems", Proc. SPIE 1576, 16th International Conference on Infrared and Millimeter Waves, 15765H (1 October 1991); https://doi.org/10.1117/12.2297910

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