A Sagnac wavefront folding interferometer for characterizing partially coherent structured light

IF 2 3区物理与天体物理 Q3 OPTICS

Applied Physics B Pub Date : 2025-09-23 DOI:10.1007/s00340-025-08544-6

Carlos Cardoso-Isidoro, Adad Yepiz-Escalante, Raul I. Hernandez-Aranda, Benjamin Perez-Garcia

引用次数: 0

Abstract

We present an experimental scheme for the measurement of the cross–correlation function in optical beams. Our approach involves illuminating a Spatial Light Modulator by an extended thermal source (generation) and a Sagnac–based wavefront folding interferometer (characterization). We emphasize the use of a common–path interferometer due to its easy assembly and high stability features, factors that make this apparatus relevant for practical applications. As illustrative examples, we explore Laguerre–Gauss and Hermite–Gauss modes, highlighting that in the partially coherent regime, their intensity distributions are blurred while retaining essential information in their cross-correlation function.

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用于表征部分相干结构光的Sagnac波前折叠干涉仪

提出了一种测量光束相互关函数的实验方案。我们的方法包括通过扩展热源（生成）和基于sagnac的波前折叠干涉仪（表征）照亮空间光调制器。我们强调使用共路干涉仪，因为它易于组装和高稳定性的特点，因素使该仪器相关的实际应用。作为说明性的例子，我们探讨了拉盖尔-高斯和厄米-高斯模式，强调在部分相干状态下，它们的强度分布是模糊的，同时在它们的相互关联函数中保留了基本信息。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Physics B 物理-光学

CiteScore

4.00

自引率

4.80%

发文量

202

审稿时长

3.0 months

期刊介绍： Features publication of experimental and theoretical investigations in applied physics Offers invited reviews in addition to regular papers Coverage includes laser physics, linear and nonlinear optics, ultrafast phenomena, photonic devices, optical and laser materials, quantum optics, laser spectroscopy of atoms, molecules and clusters, and more 94% of authors who answered a survey reported that they would definitely publish or probably publish in the journal again Publishing essential research results in two of the most important areas of applied physics, both Applied Physics sections figure among the top most cited journals in this field. In addition to regular papers Applied Physics B: Lasers and Optics features invited reviews. Fields of topical interest are covered by feature issues. The journal also includes a rapid communication section for the speedy publication of important and particularly interesting results.