Savini Giorgio, Pisano Giampaolo, Ade Peter A R
Cardiff University - Cardiff, 5 The Parade, CF24 3YB Cardiff, UK.
Appl Opt. 2006 Dec 10;45(35):8907-15. doi: 10.1364/ao.45.008907.
We adopted an existing formalism and modified it to simulate, with high precision, the transmission, reflection, and absorption of multiple-plate birefringent devices as a function of frequency. To validate the model, we use it to compare the measured properties of an achromatic five-plate device with a broadband antireflection coating to expectations derived from the material optical constants and its geometric configuration. The half-wave plate presented here is observed to perform well with a phase shift variation of < 2 degrees from the ideal 180 degrees over a bandwidth of Deltav/v approximately 1 at millimeter wavelengths. This formalism represents a powerful design tool for birefringent polarization modulators and enables its optical properties to be specified with high accuracy.
我们采用了一种现有的形式体系并对其进行修改，以高精度模拟多片双折射器件的透射、反射和吸收随频率的变化情况。为了验证该模型，我们用它将一个带有宽带抗反射涂层的消色差五片器件的测量特性与根据材料光学常数及其几何结构得出的预期进行比较。在此观察到，所呈现的半波片在毫米波波长下，在带宽Δv/v约为1的范围内，相移变化与理想的180度相差<2度，表现良好。这种形式体系是双折射偏振调制器的强大设计工具，能够高精度地指定其光学特性。
