Rodrigo José A, Alieva Tatiana, Cámara Alejandro, Martínez-Matos O, Cheben Pavel, Calvo María L
Instituto de Optica, CSIC, Madrid, Spain.
Opt Express. 2011 Mar 28;19(7):6064-77. doi: 10.1364/OE.19.006064.
In this work, we propose a robust and versatile approach for the characterization of the complex field amplitude of holographically generated coherent-scalar paraxial beams. For this purpose we apply an iterative algorithm that allows recovering the phase of the generated beam from the measurement of its Wigner distribution projections. Its performance is analyzed for beams of different symmetry: Laguerre-Gaussian, Hermite-Gaussian and spiral ones, which are obtained experimentally by a computer generated hologram (CGH) implemented on a programmable spatial light modulator (SLM). Using the same method we also study the quality of their holographic recording on a highly efficient photopolymerizable glass. The proposed approach is useful for the creation of adaptive CGH that takes into account the peculiarities of the SLM, as well as for the quality control of the holographic data storage.
在这项工作中，我们提出了一种稳健且通用的方法，用于表征全息生成的相干标量傍轴光束的复场振幅。为此，我们应用一种迭代算法，该算法能够从其维格纳分布投影的测量中恢复生成光束的相位。针对不同对称性的光束，即拉盖尔 - 高斯光束、厄米 - 高斯光束和螺旋光束，分析了该算法的性能，这些光束是通过在可编程空间光调制器（SLM）上实现的计算机生成全息图（CGH）实验获得的。使用相同的方法，我们还研究了它们在高效光聚合玻璃上全息记录的质量。所提出的方法对于创建考虑SLM特性的自适应CGH以及全息数据存储的质量控制很有用。
