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Applied Optics

Applied Optics


  • Vol. 28, Iss. 9 — May. 1, 1989
  • pp: 1714–1719

Wedge shaped cell for highly absorbent liquids: infrared optical constants of water

David M. Wieliczka, Shengshan Weng, and Marvin R. Querry  »View Author Affiliations

Applied Optics, Vol. 28, Issue 9, pp. 1714-1719 (1989)

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We designed an improved wedge shaped cell for measuring Lambert absorption coefficient spectra α(ν) of highly absorbent liquids. The design allows for accurate determination of the apex angle of the wedge, sealing the cell, and injection of the liquid without disassembling the cell. We measured α(ν) for water through the 500–12,500-cm−1 wavenumber region to determine the range of α(ν) for which the cell provided accurate measurements. We then determined the imaginary part of the complex refractive index N(ν) = n(ν) + ik(ν) from α(ν) and used Kramers-Kronig methods to compute n(ν) from k(ν).

© 1989 Optical Society of America

Original Manuscript: April 25, 1988
Published: May 1, 1989

David M. Wieliczka, Shengshan Weng, and Marvin R. Querry, "Wedge shaped cell for highly absorbent liquids: infrared optical constants of water," Appl. Opt. 28, 1714-1719 (1989)

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