OSA's Digital Library

Applied Optics

Applied Optics


  • Vol. 38, Iss. 6 — Feb. 20, 1999
  • pp: 1040–1045

Fuel Vapor Measurements by Linear Raman Spectroscopy Using Spectral Discrimination from Droplet Interferences

Bernd Mewes, Gerd Bauer, and Dieter Brüggemann  »View Author Affiliations

Applied Optics, Vol. 38, Issue 6, pp. 1040-1045 (1999)

View Full Text Article

Acrobat PDF (295 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Vapor-phase measurements by linear Raman spectroscopy are performed in the vicinity of methanol droplets. Several types of interference by these droplets are identified and removed by appropriate filtering. This procedure, together with the phase-dependent spectral shift of the OH stretching vibration frequency, is proved to permit single-pulse linear Raman measurements of methanol vapor and nitrogen on a line with coexisting droplets. Laser-induced droplet breakdown is found to limit the applicable laser irradiance to approximately 2 GW/cm<sup>2</sup> and is avoided by use of a flash-lamp-pumped dye laser with high energy (1–7 J) and long pulses (1.5 μs).

© 1999 Optical Society of America

OCIS Codes
(000.2170) General : Equipment and techniques
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(120.5820) Instrumentation, measurement, and metrology : Scattering measurements
(280.2490) Remote sensing and sensors : Flow diagnostics
(290.5860) Scattering : Scattering, Raman
(300.6450) Spectroscopy : Spectroscopy, Raman

Bernd Mewes, Gerd Bauer, and Dieter Brüggemann, "Fuel Vapor Measurements by Linear Raman Spectroscopy Using Spectral Discrimination from Droplet Interferences," Appl. Opt. 38, 1040-1045 (1999)

Sort:  Author  |  Year  |  Journal  |  Reset


  1. L. A. Melton and J. F. Verdieck, “Vapor/liquid visualization in fuel sprays,” in Twentieth Symposium (International) on Combustion (Combustion Institute, Pittsburgh, Pa., 1984), pp. 1283–1290.
  2. R. Bazile and D. Stepowski, “Measurements of vaporized and liquid fuel concentration fields in a burning spray jet of acetone using planar laser induced fluorescence,” Exp. Fluids 20, 1–9 (1995).
  3. T. Heinze, T. Schmidt, D. Brüggemann, and K.-F. Knoche, “Mixture formation in a spray observed by spontaneous Raman spectroscopy,” in Combusting Flow Diagnostics D. F. G. Durão, M. V. Heitor, J. H. Whitelaw, and P. O. Witze, eds., Vol. E 207 of NATO ASI Series in Applied Sciences (Kluwer Academic, Dordrecht, The Netherlands, 1992), pp. 469–480.
  4. R. Vehring and G. Schweiger, “Raman scattering on liquid aerosol particles: concentration measurements on droplet chains,” J. Aerosol Sci. 22, S399–S402 (1991).
  5. G. Schweiger, “Raman scattering on microparticles: size dependence,” J. Opt. Soc. Am. B 8, 1770–1778 (1991).
  6. G. Herzberg, Molecular Spectra and Molecular Structure II (Van Nostrand, New York, 1962), Chap. 5, p. 536.
  7. B. Mewes, G. Bauer, and D. Brüggemann, “Vapor/liquid mass fraction measurements by linear Raman spectroscopy,” in Laser Applications to Chemical and Environmental Analysis, Vol. 3 of 1998 OSA Technical Digest Series (Optical Society of America, Washington, D.C., 1998), pp. 184–186.
  8. R. G. Pinnick, P. Chýlek, M. Jarzembski, E. Creegan, G. Fernandez, J. D. Pendleton, and A. Biswas, “Aerosol-induced laser breakdown thresholds: wavelength dependence,” Appl. Opt. 27, 987–996 (1988).
  9. P. Chýlek, M. Jarzembski, N. Y. Chou, and R. G. Pinnick, “Effect of size and material of liquid spherical particles on laser-induced breakdown,” Appl. Phys. Lett. 49, 1475–1477 (1986).
  10. R. Vehring, “Linear Raman spectroscopy on aqueous aerosols: influence of nonlinear effects on detection limits,” J. Aerosol Sci. 29, 65–79 (1998).
  11. N. Abe and M. Ito, “Effects of hydrogen bonding on the Raman intensities of methanol, ethanol and water,” J. Raman Spectrosc. 7, 161–167 (1978).
  12. H. W. Schrötter and H. W. Klöckner, “Raman scattering cross sections in gases and liquids,” in Raman Spectroscopy of Gases and Liquids, A. Weber, ed. (Springer-Verlag, Berlin, 1979), pp. 123–166.
  13. A. C. Eckbreth, Laser Diagnostics for Combustion Temperature and Species (Abacus, Cambridge, Mass., 1988), pp. 151–152.
  14. H.-B. Lin and A. J. Campillo, “Microcavity enhanced Raman gain,” Opt. Commun. 133, 287–292 (1997).

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited