Graduate School of Science and Technology, Kyoto Institute of Technology, Kyoto, Japan.
Opt Lett. 2013 Jul 15;38(14):2463-5. doi: 10.1364/OL.38.002463.
We propose a method for extending the space bandwidth (SBW) available for recording an object wave in parallel phase-shifting digital holography using a four-channel polarization-imaging camera. A linear spatial carrier of the reference wave is introduced to an optical setup of parallel four-step phase-shifting interferometry using a commercially available polarization-imaging camera that has four polarization-detection channels. Then a hologram required for parallel two-step phase shifting, which is a technique capable of recording the widest SBW in parallel phase shifting, can be obtained. The effectiveness of the proposed method was numerically and experimentally verified.
我们提出了一种使用四通道偏振成像相机扩展用于记录物波的并行相移数字全息中的空间带宽（SBW）的方法。通过使用具有四个偏振探测通道的市售偏振成像相机，将线性空间载波引入到平行四步相移干涉的光学设置中。然后，可以获得用于并行两步相移的全息图，该技术能够在并行相移中记录最宽的 SBW。所提出的方法已通过数值和实验进行了验证。
