用于高吸水性液体的楔形细胞：水的红外光学常数。

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

作者信息

Wieliczka D M, Weng S, Querry M R

出版信息

Appl Opt. 1989 May 1;28(9):1714-9. doi: 10.1364/AO.28.001714.

DOI:10.1364/AO.28.001714

PMID:20548731

Abstract

We designed an improved wedge shaped cell for measuring Lambert absorption coefficient spectra alpha(nu) 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 alpha(nu) for water through the 500-12,500-cm(-1) wavenumber region to determine the range of alpha(nu) for which the cell provided accurate measurements. We then determined the imaginary part of the complex refractive index N(nu) = n(nu) + ik(nu) from alpha(nu) and used Kramers-Kronig methods to compute n(nu) from k(nu).

摘要

我们设计了一种改进的楔形池，用于测量高吸收性液体的朗伯吸收系数光谱α(ν)。该设计能够精确测定楔形池的顶角，密封池子，并在不拆卸池子的情况下注入液体。我们测量了水在500 - 12500 cm⁻¹波数区域的α(ν)，以确定该池子能提供准确测量的α(ν)范围。然后，我们从α(ν)确定了复折射率N(ν)=n(ν)+ik(ν)的虚部，并使用克拉默斯 - 克勒尼希方法从k(ν)计算n(ν)。