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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 18 — Jun. 20, 1998
  • pp: 3912–3922

Development of a pulsed backscatter-absorption gas-imaging system and its application to the visualization of natural gas leaks

Thomas J. Kulp, Peter Powers, Randall Kennedy, and Uta-Barbara Goers  »View Author Affiliations


Applied Optics, Vol. 37, Issue 18, pp. 3912-3922 (1998)
http://dx.doi.org/10.1364/AO.37.003912


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Abstract

The design and evaluation of a backscatter-absorption gas-imaging sensor that operates in a pulsed mode is described. It is capable of video visualization of natural gas leaks. Its development was motivated by the need for a methane imaging system to operate at ranges and sensitivities useful to the natural gas industry. The imager employs pulsed laser illumination at a repetition rate of 30 Hz and an average power of ∼150 mW to image gas at standoff ranges of as long as 100 m, using a backscatter target with a reflectivity of 0.016 sr-1. This is a tenfold improvement over an earlier raster-scanned imager. Natural gas leaks as small as 1.6 × 10-4 standard liters/s [equal to 0.02 standard cubic feet per hour (scfh)] were imaged at short ranges; leaks as low as 7.9 × 10-4 standard liters/s (0.1 scfh) were observed at long ranges. Data are compared with model predictions, and potential extensions to a fieldable prototype are discussed. The optimization of a direct-injection focal-plane array for detecting short (nanosecond) laser pulses is described.

© 1998 Optical Society of America

OCIS Codes
(100.0100) Image processing : Image processing
(110.3080) Imaging systems : Infrared imaging
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.1120) Remote sensing and sensors : Air pollution monitoring
(280.1910) Remote sensing and sensors : DIAL, differential absorption lidar
(280.3640) Remote sensing and sensors : Lidar

History
Original Manuscript: September 15, 1997
Revised Manuscript: February 20, 1998
Published: June 20, 1998

Citation
Thomas J. Kulp, Peter Powers, Randall Kennedy, and Uta-Barbara Goers, "Development of a pulsed backscatter-absorption gas-imaging system and its application to the visualization of natural gas leaks," Appl. Opt. 37, 3912-3922 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-18-3912


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References

  1. T. G. McRae, T. J. Kulp, “Backscatter absorption gas imaging: a new technique for gas visualization,” Appl. Opt. 32, 4037–4050 (1993). [PubMed]
  2. P. E. Powers, T. J. Kulp, R. Kennedy, “Issues affecting differential absorption laser imaging of gas leaks,” in Conference on Lasers and Electro-Optics, Vol. 9 of 1996 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1996), p. 54.
  3. T. J. Kulp, R. Kennedy, D. Garvis, L. Seppala, D. Adomatis, J. Stahovec, “Further advances in gas imaging: field testing of an extended-range gas imager,” in Proceedings of the International Conference on Lasers ’90, D. G. Harris, J. Herbelin, eds. (Society for Optical and Quantum Electronics, McLean, Va., 1991), pp. 407–413.
  4. T. J. Kulp, R. Kennedy, M. Delong, D. Garvis, “The development and testing of a backscatter absorption gas imaging system capable of imaging at a range of 300 m,” in Applied Laser Radar Technology, G. M. Kamerman, W. E. Keicher, eds., Proc. SPIE1936, 204–212 (1993). [CrossRef]
  5. T. G. McRae, L. L. Altpeter, “Application of backscatter absorption gas imaging to natural gas leak detection,” in Proceedings of the 1992 International Gas Research Conference 2, H. A. Thompson, ed. (Government Institutes, Inc., Rockville, Md., 1993) pp. 1312–1322.
  6. R. M. Measures, Laser Remote Sensing: Fundamentals and Applications (Wiley, New York, 1984), Chap. 7.
  7. T. S. McKechnie, “Speckle reduction,” in Laser Speckle and Related Phenomena, J. C. Dainty, ed., Vol. 9 of Topics in Applied Physics (Springer-Verlag, New York, 1975), pp. 123–171. [CrossRef]
  8. M. J. T. Milton, T. J. McIlveen, D. C. Hanna, P. T. Woods, “A high-gain optical parametric amplifier tunable between 3.27 and 3.65 μm,” Opt. Commun. 93, 186–190 (1992). [CrossRef]
  9. F. M. Dickey, B. D. O’Neil, “Multifaceted laser beam integrators: general formulation and design concepts,” Opt. Eng. 27, 999–1007 (1988). [CrossRef]
  10. J. DiBenedetto, G. Capelle, S. Lutz, “Uniform field laser illumination for remote sensing,” in Earth and Atmospheric Remote Sensing, Proc. SPIE1492, 115–125 (1991). [CrossRef]
  11. R. Cannata, Raytheon Amber Engineering, Goleta, Calif. 93117 (personal communication, 1994).
  12. H. Henshall, J. Cruickshank, “Reflectance characteristics of selected materials for reference targets for 10.6-μm laser radars,” Appl. Opt. 27, 2748–2755 (1988). [CrossRef] [PubMed]

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