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首页> 外文期刊>Optics and Lasers in Engineering >Effective angular and wavelength modeling of parallel aligned liquid crystal devices
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Effective angular and wavelength modeling of parallel aligned liquid crystal devices

机译:平行排列液晶装置的有效角度和波长建模

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摘要

Parallel aligned liquid crystal (PA-LC) devices are widely used in many optics and photonics applications to control the amplitude, phase and/or state of polarization (SOP) of light beams. Simplified models yet with a good predictive capability are extremely useful in the optimal application of these devices. In this paper we propose and demonstrate the validity of a novel model enabling to calculate the voltage dependent retardance provided by parallel-aligned liquid crystal (PA-LC) devices for a very wide range of incidence angles and any wavelength in the visible. We derive the theoretical expressions, and both experimental and theoretical retardance results are obtained showing a very good agreement. The proposed model is robust and well adapted to a reverse-engineering approach for the calibration of its parameters, whose values are obtained without ambiguities. The model is based on only three physically related magnitudes: two off-state parameters per wavelength and one global voltage dependent parameter, the tilt angle of the LC molecules. To our knowledge it represents the most simplified model available for PA-LC devices yet showing predictive capability. Not only eases the design of experiments dealing with unconventional polarization states or complex amplitude modulation, but it also serves to analyze the physics and dynamics of PA-LC cells since we have estimation for their voltage dependent tilt angle within the device. (C) 2015 Elsevier Ltd. All rights reserved.
机译:平行排列液晶(PA-LC)器件广泛用于许多光学和光子应用中,以控制光束的振幅,相位和/或偏振状态(SOP)。具有良好预测能力的简化模型对于这些设备的最佳应用极为有用。在本文中,我们提出并证明了一种新颖的模型的有效性,该模型能够针对非常宽的入射角范围和可见光中的任何波长,计算由平行取向液晶(PA-LC)器件提供的电压依赖性延迟。我们推导了理论表达式,并且获得了实验和理论延迟结果,它们显示出非常好的一致性。所提出的模型是健壮的,并且非常适合于逆向工程方法以对其参数进行校准,其值的获得没有歧义。该模型仅基于三个与物理相关的量值:每个波长两个关闭状态参数和一个全局电压相关参数(LC分子的倾斜角)。据我们所知,它代表了可用于PA-LC设备的最简化模型,但具有预测能力。不仅简化了处理非常规极化状态或复杂幅度调制的实验的设计,而且由于我们已经估计了器件中与电压相关的倾斜角,因此它还可以分析PA-LC电池的物理和动力学。 (C)2015 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Optics and Lasers in Engineering》 |2015年第11期|114-121|共8页
  • 作者单位

    Univ Alicante, Dept Fis Ing Sistemas & Teoria Senal, E-03080 Alicante, Spain|Univ Alicante, IU Fis Aplicada Ciencias & Tecnol, E-03080 Alicante, Spain;

    Univ Alicante, Dept Fis Ing Sistemas & Teoria Senal, E-03080 Alicante, Spain|Univ Alicante, IU Fis Aplicada Ciencias & Tecnol, E-03080 Alicante, Spain;

    Univ Alicante, Dept Fis Ing Sistemas & Teoria Senal, E-03080 Alicante, Spain|Univ Alicante, IU Fis Aplicada Ciencias & Tecnol, E-03080 Alicante, Spain;

    Univ Alicante, Dept Fis Ing Sistemas & Teoria Senal, E-03080 Alicante, Spain|Univ Alicante, IU Fis Aplicada Ciencias & Tecnol, E-03080 Alicante, Spain;

    Univ Alicante, IU Fis Aplicada Ciencias & Tecnol, E-03080 Alicante, Spain|Univ Alicante, Dept Opt Farmacol & Anat, E-03080 Alicante, Spain;

    Univ Alicante, Dept Fis Ing Sistemas & Teoria Senal, E-03080 Alicante, Spain|Univ Alicante, IU Fis Aplicada Ciencias & Tecnol, E-03080 Alicante, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Liquid-crystal devices; Parallel-aligned; Birefringence; Spatial light modulators; Displays;

    机译:液晶装置平行取向双折射空间光调制器显示器;

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