West E A
Appl Opt. 1978 Sep 15;17(18):3010-3. doi: 10.1364/AO.17.003010.
The use of KDP as a polarization rotator has been limited to small field of view instruments. To investigate this limitation, the index ellipsoid is used to describe the optical properties of KDP and to calculate the retardance and fast axis as a function of the angle of incidence and voltage. Computed converging light patterns are then compared with observed intensity patterns formed by KDP. Finally, computed intensity patterns are used to demonstrate how the field of view of KDP can be increased when properly aligned with a positive uniaxial crystal.
磷酸二氢钾（KDP）作为偏振旋转器的应用一直局限于小视场仪器。为了研究这一局限性，采用折射率椭球来描述KDP的光学特性，并计算相位延迟和快轴随入射角和电压的变化。然后将计算得到的会聚光图案与KDP形成的观测强度图案进行比较。最后，利用计算得到的强度图案来演示当KDP与正单轴晶体正确对准时，其视场如何能够增大。
