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Applied Optics

Applied Optics


  • Vol. 19, Iss. 7 — Apr. 1, 1980
  • pp: 1143–1150

Laser measurement of extinction coefficients of highly absorbing liquids

F. E. Hoge and J. S. Kincaid  »View Author Affiliations

Applied Optics, Vol. 19, Issue 7, pp. 1143-1150 (1980)

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A coaxial dual-channel laser system has been developed for the measurement of extinction coefficients of highly absorbing liquids. An empty wedge-shaped sample cell is first translated laterally through a He–Ne laser beam to measure the differential thickness using interference fringes in reflection. The wedge cell is carefully filled with the oil sample and translated through the coaxially positioned dye laser beam for the differential attenuation or extinction measurement. Optional use of the instrumentation as a single-channel extinction measurement system and also as a refractometer is detailed. The system and calibration techniques were applied to the measurement of two crude oils whose extinction values were required to complete the analysis of airborne laser data gathered over four controlled spills.

© 1980 Optical Society of America

Original Manuscript: October 31, 1979
Published: April 1, 1980

F. E. Hoge and J. S. Kincaid, "Laser measurement of extinction coefficients of highly absorbing liquids," Appl. Opt. 19, 1143-1150 (1980)

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