Maluenda David, Juvells Ignasi, Martínez-Herrero Rosario, Carnicer Artur
Departament de Física Aplicada i Óptica, Universitat de Barcelona, Martí i Franquès, 08028 Barcelona, Spain.
Opt Express. 2013 Mar 11;21(5):5432-9. doi: 10.1364/OE.21.005432.
Methods for generating beams with arbitrary polarization based on the use of liquid crystal displays have recently attracted interest from a wide range of sources. In this paper we present a technique for generating beams with arbitrary polarization and shape distributions at a given plane using a Mach-Zehnder setup. The transverse components of the incident beam are processed independently by means of spatial light modulators placed in each path of the interferometer. The modulators display computer generated holograms designed to dynamically encode any amplitude value and polarization state for each point of the wavefront in a given plane. The steps required to design such beams are described in detail. Several beams performing different polarization and intensity landscapes have been experimentally implemented. The results obtained demonstrate the capability of the proposed technique to tailor the amplitude and polarization of the beam simultaneously.
基于液晶显示器的使用来生成具有任意偏振态光束的方法近来已引起广泛关注。在本文中，我们提出了一种利用马赫 - 曾德尔装置在给定平面上生成具有任意偏振态和形状分布光束的技术。入射光束的横向分量通过放置在干涉仪各光路中的空间光调制器进行独立处理。这些调制器显示计算机生成的全息图，这些全息图被设计用于动态编码给定平面中波前各点的任何幅度值和偏振态。详细描述了设计此类光束所需的步骤。已经通过实验实现了几种呈现不同偏振和强度分布的光束。所获得的结果证明了所提出技术同时调整光束幅度和偏振态的能力。
