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Applied Optics

Applied Optics


  • Vol. 35, Iss. 21 — Jul. 20, 1996
  • pp: 4026–4032

Tunable diode-laser absorption measurements of methane at elevated temperatures

V. Nagali, S. I. Chou, D. S. Baer, R. K. Hanson, and J. Segall  »View Author Affiliations

Applied Optics, Vol. 35, Issue 21, pp. 4026-4032 (1996)

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A diode-laser sensor system based on absorption spectroscopy techniques has been developed to monitor CH4 nonintrusively in high-temperature environments. Fundamental spectroscopic parameters, including the line strengths of the transitions in the R(6) manifold of the 2ν3 band near 1.646 μm, have been determined from high-resolution absorption measurements in a heated static cell. In addition, a corrected expression for the CH4 partition function has been validated experimentally over the temperature range from 400 to 915 K. Potential applications of the diode-laser sensor system include process control, combustion measurements, and atmospheric monitoring.

© 1996 Optical Society of America

Original Manuscript: November 7, 1995
Revised Manuscript: February 13, 1996
Published: July 20, 1996

V. Nagali, S. I. Chou, D. S. Baer, R. K. Hanson, and J. Segall, "Tunable diode-laser absorption measurements of methane at elevated temperatures," Appl. Opt. 35, 4026-4032 (1996)

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  1. M. P. Arroyo, R. K. Hanson, “Absorption measurements of water-vapor concentration, temperature, and line-shape parameters using a tunable InGaAsP diode laser,” Appl. Opt. 32, 6104–6116 (1993). [CrossRef] [PubMed]
  2. M. P. Arroyo, S. Langlois, R. K. Hanson, “Diode-laser absorption technique for simultaneous measurements of multiple gasdynamic parameters in high-speed flows containing water vapor,” Appl. Opt. 33, 3296–3306 (1994). [CrossRef] [PubMed]
  3. M. P. Arroyo, T. P. Birbeck, D. S. Baer, R. K. Hanson, “Dual diode-laser fiber-optic diagnostic for water-vapor measurements,” Opt. Lett. 19, 1091–1093 (1994). [CrossRef] [PubMed]
  4. D. S. Baer, R. K. Hanson, M. E. Newfield, N. K. L. M. Gopaul, “Multiplexed diode-laser sensor system for simultaneous H2O, O2, and temperature measurements,” Opt. Lett. 19, 1900–1902 (1994). [CrossRef] [PubMed]
  5. D. S. Baer, V. Nagali, E. R. Furlong, R. K. Hanson, M. E. Newfield, “Scanned- and fixed-wavelength absorption diagnostics for combustion measurements using a multiplexed diode-laser sensor system,” AIAA J. 34, 489–493 (1996). [CrossRef]
  6. M. G. Allen, S. J. Davis, W. J. Kessler, D. A. Palombo, D. M. Sonnenfroh, “Diode laser instrumentation for aeropropulsion applications,” AIAA Pub. 95-0427 (American Institute of Aeronautics and Astronautics, New York, 1995).
  7. M. G. Allen, K. L. Carleton, S. J. Davis, W. J. Kessler, C. E. Otis, D. A. Palombo, D. M. Sonnenfroh, “Ultrasensitive dual-beam absorption and gain spectroscopy: application for near-infrared and visible diode laser sensors,” Appl. Opt. 34, 3240–3249 (1995). [CrossRef] [PubMed]
  8. Y. Shimose, T. Okamoto, A. Maruyama, M. Aizawa, H. Nagai, “Remote sensing of methane gas by differential absorption measurement using a wavelength tunable DFB LD,” IEEE Photon. Technol. Lett. 3, 86–87 (1991). [CrossRef]
  9. K. Uehara, H. Tai, “Remote detection of methane with a 1.66 μm diode laser,” Appl. Opt. 31, 809–814 (1992). [CrossRef] [PubMed]
  10. V. Weldon, P. Phelan, J. Hegarty, “Methane and carbon dioxide sensing using a DFB laser diode operating at 1.64 μm,” Electron. Lett. 29, 560–561 (1993). [CrossRef]
  11. H. Tai, K. Yamamoto, M. Uchida, S. Osawa, K. Uehara, “Long-distance simultaneous detection of methane and acetylene by using diode lasers coupled with optical fibers,” IEEE Photon. Technol. Lett. 4, 804–807 (1992). [CrossRef]
  12. D. C. Hovde, J. A. Silver, A. C. Stanton, “Measuring atmospheric methane and water vapor using near-infrared diode lasers,” in Tunable Diode Laser Spectroscopy, Lidar, and DIAL Techniques for Environmental and Industrial Measurements, A. Fried, D. K. Killinger, H. I. Schiff, eds., Proc. SPIE2112, 110–117 (1994).
  13. L. S. Rothman, R. R. Gamache, R. H. Tipping, C. P. Rinsland, M. A. H. Smith, D. C. Benner, V. M. Devi, J.-M. Flaud, C. Camy-Peyret, A. Perrin, A. Goldman, S. T. Massie, L. R. Brown, R. A. Toth, “The hitran molecular database: ditions of 1991 and 1992,” J. Quant. Spectrosc. Radiat. Transfer 48, 469–507 (1992). [CrossRef]
  14. J. S. Margolis, “Measured line positions and strengths of methane between 5500 and 6180 cm−1,” Appl. Opt. 27, 4038–4051 (1988). [CrossRef] [PubMed]
  15. P. Varanasi, S. Chudamani, “Measurements of collision-broadened line widths in the ν4-fundamental band of 12CH4 at low temperatures,” J. Quant. Spectrosc. Radiat. Transfer 41, 335–343 (1989). [CrossRef]
  16. A. B. Antipov, V. P. Kochanov, V. A. Sapozhnikova, E. G. Tinchurina, “Collisional broadening and shift of the 3.39 μm line of the ν3 band of methane,” Opt. Spektrosk. 66, 36–38 (1989).
  17. G. Herzberg, Infrared and Raman Spectra of Polyatomic Molecules, Vol. 2 of Molecular Spectra and Molecular Structure Series (Van Nostrand, New York, 1960).
  18. R. R. Gamache, R. L. Hawkins, L. S. Rothman, “Total internal partition sums in the temperature range 70–3000 K: atmospheric linear molecules,” J. Mol. Spectrosc. 142, 205–346 (1990). [CrossRef]
  19. R. R. Gamache, Center for Atmospheric Research, University of Massachusetts, Lowell, Lowell, Massachusetts 01854 (private communication, June1995).
  20. R. S. McDowell, “Rotational partition functions for spherical-top molecules,” J. Quant. Spectrosc. Radiat. Transfer 38, 337–346 (1987). [CrossRef]

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