In this paper, we propose a real-time incoherent digital holographic (IDH) recording system free from bias and twin-image noises. A motionless three-step polarization-encoded phase-shifter operating at 99 Hz is realized with two electrically controllable birefringence-mode liquid crystal cells operating in tandem with a geometric phase lens and polarizers. Based on the proposed optical configuration, a coaxial straight-line self-interference IDH recording system is devised. Notably, the elimination of bias and twin-image noise from three phase-shifted images is demonstrated as a proof of concept. Moreover, complex-valued holographic video acquisitions with a resolution greater than 20 megapixels are demonstrated, with an effective acquisition frequency of 33 Hz.

中文翻译：

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具有时间几何相位复用的实时无噪声在线自干扰非相干数字全息

在本文中，我们提出了一种没有偏差和双图像噪声的实时非相干数字全息 (IDH) 记录系统。工作频率为 99 Hz 的静止三步偏振编码移相器是通过两个电控双折射模式液晶单元与几何相位透镜和偏振器串联工作实现的。基于所提出的光学配置，设计了同轴直线自干涉IDH记录系统。值得注意的是，从三个相移图像中消除偏差和双图像噪声被证明是一个概念证明。此外，演示了分辨率大于 20 兆像素的复值全息视频采集，有效采集频率为 33 Hz。