V2EX diattenuation

Diattenuation

Definition 定义

diattenuation(偏振二向衰减/二向性衰减):在偏振光学中指光学介质或元件对两种正交偏振态(或不同偏振分量)的透过/衰减程度不同的性质。它常用于描述偏振片、二色性材料、各向异性样品等在强度层面对偏振的“选择性吸收/透过”,并常作为 Mueller 矩阵表征中的一个关键参数(与 retardance/depolaization 等并列)。

Pronunciation 发音

/da.tn.jue.n/

Examples 例句

This coating shows very little diattenuation.
这种镀膜几乎不表现出二向衰减。

We estimated the tissue’s diattenuation spectrum and incorporated it into a Mueller-matrix model to improve polarimetric imaging accuracy.
我们估计了该组织的二向衰减光谱,并将其纳入穆勒矩阵模型,以提高偏振成像的准确性。

Etymology 词源

该词由 di-(“两、双”) + attenuation(“衰减”)构成,字面意思是“两种(状态的)衰减差异”。在偏振光学语境中,“两种状态”通常指两种互相正交的偏振态,因此 diattenuation 专指“对不同偏振的差别衰减”。

Related Words 相关词

In Literature & Works 文献与作品

  • Polarized Light(Dennis H. Goldstein)偏振光基础与应用中讨论 diattenuation 与相关测量概念
  • Polarized Light(Edward Collett)系统讲解偏振器件性质,涉及二向性/二向衰减表征
  • Field Guide to Polarization(David S. Schechner 等相关“Field Guide”体系)用工程化方式概述 diattenuation、retardance、Mueller 矩阵
  • Handbook of Optics(McGraw-Hill,多卷本)偏振与各向异性光学章节中使用 diattenuation 术语进行建模与参数化
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