Mishina T, Okano F, Yuyama I
Science and Technical Research Laboratories, NHK, Japan Broadcasting Corporation, 1-10-11 Kinuta, Setagaya-ku, 157-8510 Tokyo, Japan.
Appl Opt. 1999 Jun 10;38(17):3703-13. doi: 10.1364/ao.38.003703.
The single-sideband method of holography, as is well known, cuts off beams that come from conjugate images for holograms produced in the Fraunhofer region and from objects with no phase components. The single-sideband method with half-zone-plate processing is also effective in the Fresnel region for beams from an object that has phase components. However, this method restricts the viewing zone to a narrow range. We propose a method to improve this restriction by time-alternating switching of hologram patterns and a spatial filter set on the focal plane of a reconstruction lens.
众所周知，全息术的单边带方法会切断来自夫琅禾费区域产生的全息图的共轭图像以及没有相位分量的物体的光束。对于来自具有相位分量的物体的光束，采用半波带片处理的单边带方法在菲涅耳区域也有效。然而，这种方法将观察区域限制在一个狭窄的范围内。我们提出一种方法，通过对全息图图案进行时间交替切换以及在重建透镜焦平面上设置空间滤波器组来改善这种限制。
