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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 30 — Oct. 20, 1999
  • pp: 6439–6446

Frequency dependence in a liquid’s complex refractive index measured with infrared spectroradiometry

Walt McKeown  »View Author Affiliations


Applied Optics, Vol. 38, Issue 30, pp. 6439-6446 (1999)
http://dx.doi.org/10.1364/AO.38.006439


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Abstract

A laboratory measurement of wavelength dependence in the real n(λ) and the imaginary k(λ) parts of a liquid’s complex refractive index is presented. A known heat flow through the liquid–gas interface is generated while a high-resolution infrared radiance spectrum is taken simultaneously. Wavelength variations of the absorption coefficient allow the emerging radiation to sense subsurface temperature gradients. This technique is valid only at intervals at which the absorption coefficient is sufficiently low to allow subsurface temperatures to be measured. Knowledge of a liquid’s thermal conductivity, specific heat, and light transmission speed is required. Measurement error depends on radiance measurement error and the minimization of atmospheric parameters.

© 1999 Optical Society of America

OCIS Codes
(120.4530) Instrumentation, measurement, and metrology : Optical constants
(240.6490) Optics at surfaces : Spectroscopy, surface
(300.2140) Spectroscopy : Emission

History
Original Manuscript: February 1, 1999
Revised Manuscript: May 10, 1999
Published: October 20, 1999

Citation
Walt McKeown, "Frequency dependence in a liquid’s complex refractive index measured with infrared spectroradiometry," Appl. Opt. 38, 6439-6446 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-30-6439


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References

  1. W. L. Smith, “Future space-based sounding observations for weather analysis and forecasting,” Adv. Space Res. 12, 175–178 (1992). [CrossRef]
  2. H. E. Revercomb, H. Buijs, H. B. Howell, D. D. Laporte, W. L. Smith, L. A. Sromovsky, “Radiometric calibration of IR Fourier transform spectrometers: Solution to problems with the High-resolution Interferometer Sounder,” Appl. Opt. 27, 3210–3218 (1988). [CrossRef] [PubMed]
  3. P. Schluessel, W. Emery, H. Grassl, T. Mammen, “On the bulk-skin temperature difference and its impact on satellite remote sensing of sea surface temperature,” J. Geophys. Res. 95, 13,341–13,356 (1990). [CrossRef]
  4. K. Katsaros, “The aqueous thermal boundary layer,” Boundary-Layer Meteorol. 18, 107–127 (1980). [CrossRef]
  5. D. Plassl, G. F. Edwards, eds., Infrared Handbook (Springer-Verlag, Berlin, 1990).
  6. H. D. Downing, D. Williams, “Optical constants of water in the infrared,” J. Geophys. Res. 80, 1656–1661 (1975). [CrossRef]
  7. W. L. Smith, “Iterative solution of the radiative transfer equation for the temperature and absorbing gas profile of an atmosphere,” Appl. Opt. 9, 1993–1999 (1970). [CrossRef] [PubMed]
  8. W. F. Feltz, “Meteorological applications of the atmospheric emitted radiance interferometer,” M.S. thesis (Department of Oceanic and Atmospheric Sciences, University of Wisconsin-Madison, Madison, Wisc., 1994).
  9. W. McKeown, F. Bretherton, H. L. Huang, W. L. Smith, H. L. Revercomb, “Sounding the skin of water: sensing air/water interface temperature gradients with interferometry,” J. Atmos. Ocean. Technol. 12, 1313–1327 (1995). [CrossRef]

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