Abstract

It is shown that the optoacoustic effect in gases can be used for radiometric remote trace-gas analysis. The relevant physical principles involved are outlined and practical limitations are discussed and shown to be rather severe.

© 1980 Optical Society of America

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  1. L. B. Kreuzer, "Ultralow gas concentration infrared absorption spectroscopy," J. Appl. Phys. 42, 2934–2943 (1971).
  2. P. Perlmutter, S. Shtrikman, and M. Slatkine, "Optoacoustic detection of ethylene in the presence of interfering pollutants," Appl. Opt. 18, 2267–2274 (1979).
  3. E. Kritchman, S. Shtrikman, and M. Slatkine, "Resonant optoacoustic cells for trace gas analysis," J. Opt. Soc. Am. 68, 1257–1271 (1978).
  4. Smith, Jones, and Chasmar, The Detection and Measurement of Infrared Radiation (Oxford University, New York, 1968).
  5. P. L. Hanst, "Spectroscopic Methods for Air Pollution Measurements," in Advances in Environmental Science and Technology, edited by Pitts and Calf (Wiley, New York, 1971), Vol. 2.
  6. Notice the lack of need to calculate the optoacoustic pressure response for the S/N analysis. This is so for an ultimate Brownian noise-limited optoacoustic cell. However, in practical cases when electronic noise from the microphone limits detectivity, the pressure signal should obviously be calculated.
  7. The method follows the same identification principles applied in former "Luft" spectrophones used prior to the introduction of laser optoacoustic spectroscopy. See, for example, P. Powell and W. Hill, Non Dispersive Infrared Analysis in Science and Industry, (Plenum, New York, 1968). See also A. Girard and J. Laurent "Selective Radiometer for Remote Sensing of Gases Pollutants," in Physics in Industry, edited by E. O'Mongain and C. P. O'Tool (Pergamon, Oxford, 1976).
  8. We assumed a 5-km standard air path. See W. L. Wolfe, Handbook of Military Infrared Technology (ONR, Washington, D.C., 1965), Chap. 6.

1979 (1)

1978 (1)

1971 (1)

L. B. Kreuzer, "Ultralow gas concentration infrared absorption spectroscopy," J. Appl. Phys. 42, 2934–2943 (1971).

Appl. Opt. (1)

J. Appl. Phys. (1)

L. B. Kreuzer, "Ultralow gas concentration infrared absorption spectroscopy," J. Appl. Phys. 42, 2934–2943 (1971).

J. Opt. Soc. Am. (1)

Other (5)

Smith, Jones, and Chasmar, The Detection and Measurement of Infrared Radiation (Oxford University, New York, 1968).

P. L. Hanst, "Spectroscopic Methods for Air Pollution Measurements," in Advances in Environmental Science and Technology, edited by Pitts and Calf (Wiley, New York, 1971), Vol. 2.

Notice the lack of need to calculate the optoacoustic pressure response for the S/N analysis. This is so for an ultimate Brownian noise-limited optoacoustic cell. However, in practical cases when electronic noise from the microphone limits detectivity, the pressure signal should obviously be calculated.

The method follows the same identification principles applied in former "Luft" spectrophones used prior to the introduction of laser optoacoustic spectroscopy. See, for example, P. Powell and W. Hill, Non Dispersive Infrared Analysis in Science and Industry, (Plenum, New York, 1968). See also A. Girard and J. Laurent "Selective Radiometer for Remote Sensing of Gases Pollutants," in Physics in Industry, edited by E. O'Mongain and C. P. O'Tool (Pergamon, Oxford, 1976).

We assumed a 5-km standard air path. See W. L. Wolfe, Handbook of Military Infrared Technology (ONR, Washington, D.C., 1965), Chap. 6.

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