使用扭曲向列型液晶电视的纯相位调制

Phase-only modulation using a twisted nematic liquid crystal television.

作者信息

Barnes T H, Eiju T, Matusda K, Ooyama N

出版信息

Appl Opt. 1989 Nov 15;28(22):4845-52. doi: 10.1364/AO.28.004845.

DOI:10.1364/AO.28.004845

PMID:20555959

Abstract

We used a commercially available liquid crystal television display unit as a spatial optical phase-only modulator. To do this, we removed the integral polarizers from the unit and double passed the light under modulation through it. We found that it was possible to obtain continuous phase modulation from 0 to PI with essentially no change in the state of polarization of the output light and absorption changes of <2.5%. We wrote computer-generated phase-only holograms on the LCTV and reconstructed them optically.

摘要

我们使用了一个商用液晶电视显示单元作为空间光学纯相位调制器。为此，我们从该单元中移除了内置偏振器，并使调制光两次通过它。我们发现，有可能获得从0到π的连续相位调制，而输出光的偏振状态基本没有变化，吸收变化小于2.5%。我们在液晶电视上写入计算机生成的纯相位全息图，并进行光学重建。