QWP：四分之一波片

“四分之一波片”（Quarter Wave Plate），在光学和物理学等领域常被缩写为QWP。这种简写方式便于快速书写和使用，常见于各类未明确分类的技术文档或通用讨论中。

A quarter wave plate ( QWP ) is frequently used in a pulse Nd : YAG laser resonator and its function is determined by its location and the direction of the fast axis in the resonator.
分析表明，波片相位延迟量与光强测量值之间存在多值函数关系，因而无法仅由线偏振分量光强测量值来确定波片相位延迟量的真正值，包括无法得到波片的级次及快轴方向。
The character of composite quarter wave plate was analyzed based on the Jones matrix theory in this paper.
基于偏振光矢量的琼斯矩阵理论，本文分析了复合波片的工作特性。
Using Muller matrix and Stokes parameter, transmission and half breadth of passband of tunable Lyot filter were theoretically analysed, and the effect that the accuracy of quarter wave plate made to the character of filter was first discussed.
本文利用Muller矩阵和Stoks参量，从理论上分析Lyot可调双折射滤光片的透射率、通带半宽度等性能，并首次讨论了λ/4波片的精度对滤光片性能的影响。
Theoretical analysis to accuracy of quarter wave plate to photoelastic effect
1/4波片精度对光弹影响的理论分析
The accuracy of quarter wave plate will do not any impact on half breadth of passband of filter, but may cause the moving of transmission spectrum.
λ/4波片的精度不会对滤光片的通带半宽度产生影响，但能引起透射光谱的移动。

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