Nonlinear laser interactions with saltwater aerosols

Dennis R Alexander, D. E. Poulain, Scott A. Schaub, John P. Barton

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Intensity ratios of the resonant Na(λ = 589 nm) to Hα (λ = 656 nm) emission lines have been measured for 10 GW/cm2 KrF laser radiation (λ = 248 nm, tpulse = 17 ns) interacting with 50 μm diameter saltwater droplets as a function of position in the breakdown region parallel to the incident laser beam. Results indicate the Hα emission intensity is highly non-uniform through the plasma plume and is highest in the plume ejected back toward the laser beam. In contrast, the Na emission line intensity shows a much weaker spatial dependence as a function of position within the plasma plume. Calibration data are also reported for the ratio of Na to Hα emission intensities as a function of Na concentration (0-2000 ppm) for ≈ 20 μm diameter monodisperse droplets located at a fixed observation point in the plasma plume. Future research will extend the ratioing technique to remotely measure droplet salt concentrations in polydisperse saltwater sprays.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Int Soc for Optical Engineering
Pages90-97
Number of pages8
ISBN (Print)0819406066
StatePublished - Dec 1 1991
EventNonlinear Optics and Materials - Dallas, TX, USA
Duration: May 8 1991May 10 1991

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume1497
ISSN (Print)0277-786X

Other

OtherNonlinear Optics and Materials
CityDallas, TX, USA
Period5/8/915/10/91

Fingerprint

Aerosols
plumes
aerosols
Plasmas
Laser beams
Lasers
laser beams
lasers
interactions
Laser radiation
Calibration
Salts
sprayers
breakdown
salts

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Alexander, D. R., Poulain, D. E., Schaub, S. A., & Barton, J. P. (1991). Nonlinear laser interactions with saltwater aerosols. In Proceedings of SPIE - The International Society for Optical Engineering (pp. 90-97). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 1497). Publ by Int Soc for Optical Engineering.

Nonlinear laser interactions with saltwater aerosols. / Alexander, Dennis R; Poulain, D. E.; Schaub, Scott A.; Barton, John P.

Proceedings of SPIE - The International Society for Optical Engineering. Publ by Int Soc for Optical Engineering, 1991. p. 90-97 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 1497).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Alexander, DR, Poulain, DE, Schaub, SA & Barton, JP 1991, Nonlinear laser interactions with saltwater aerosols. in Proceedings of SPIE - The International Society for Optical Engineering. Proceedings of SPIE - The International Society for Optical Engineering, vol. 1497, Publ by Int Soc for Optical Engineering, pp. 90-97, Nonlinear Optics and Materials, Dallas, TX, USA, 5/8/91.
Alexander DR, Poulain DE, Schaub SA, Barton JP. Nonlinear laser interactions with saltwater aerosols. In Proceedings of SPIE - The International Society for Optical Engineering. Publ by Int Soc for Optical Engineering. 1991. p. 90-97. (Proceedings of SPIE - The International Society for Optical Engineering).
Alexander, Dennis R ; Poulain, D. E. ; Schaub, Scott A. ; Barton, John P. / Nonlinear laser interactions with saltwater aerosols. Proceedings of SPIE - The International Society for Optical Engineering. Publ by Int Soc for Optical Engineering, 1991. pp. 90-97 (Proceedings of SPIE - The International Society for Optical Engineering).
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