Measuring the Electro-Optical Kerr Effect Against the Background of Electro-Absorption Modulation in Liquids.

IF 3.1 3区材料科学 Q3 CHEMISTRY, PHYSICAL

Materials Pub Date : 2024-10-31 DOI:10.3390/ma17215346

Rafał Ledzion, Marek Izdebski, Anita Rambo

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Abstract

A new approach to the dynamic polarimetric method is proposed, which allows for the decoupling of electro-optical Kerr effect measurements from the electro-absorption effect in partially transparent liquids. The method is illustrated by using the results of engine oil measurements as a function of temperature and modulating field frequency. It was shown that the birefringence induced in the sample, the modulation of the ordinary wave transmission, and the modulation of the extraordinary wave transmission in the sample can be shifted in phase with respect to the square of the applied alternating modulating field. Each of these three phase shifts can depend differently on the temperature and frequency. Neglecting the influence of electro-absorption on electro-optical measurements in liquids or considering electro-absorption as an effect correlated in phase with induced birefringence may lead to significant measurement errors. This indicates that the Kerr constant and the electro-absorption coefficients for an alternating electric field should be considered as complex quantities instead of real values, as they have been traditionally. The proposed approach fills an important gap in measurement techniques described in the literature, which may provide erroneous results for measurements of the Kerr constant in partially transparent liquids including many industrially important liquids.

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在液体电吸收调制背景下测量电光克尔效应

本文提出了一种动态偏振测量法的新方法，可将部分透明液体中的电光克尔效应测量与电吸收效应解耦。利用机油测量结果作为温度和调制场频率的函数，对该方法进行了说明。结果表明，样品中诱发的双折射、普通波传输的调制和非普通波传输的调制，都会随着所施加的交变调制场的平方而发生相移。这三种相移的每一种都取决于不同的温度和频率。忽略电吸收对液体电光测量的影响，或将电吸收视为与诱导双折射相位相关的效应，可能会导致严重的测量误差。这表明，交变电场的克尔常数和电吸收系数应被视为复量值，而不是传统意义上的实数值。所提出的方法填补了文献中描述的测量技术的一个重要空白，文献中描述的测量技术可能会对部分透明液体（包括许多工业上重要的液体）的克尔常数测量提供错误的结果。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

5.80

自引率

14.70%

发文量

7753

审稿时长

1.2 months

期刊介绍： Materials (ISSN 1996-1944) is an open access journal of related scientific research and technology development. It publishes reviews, regular research papers (articles) and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced. Materials provides a forum for publishing papers which advance the in-depth understanding of the relationship between the structure, the properties or the functions of all kinds of materials. Chemical syntheses, chemical structures and mechanical, chemical, electronic, magnetic and optical properties and various applications will be considered.