Pouria Amiri , Saifollah Rasouli , Davud Hebri , Sergey A. Ponomarenko
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引用次数: 0
摘要
我们提出了一种受塔尔博特自成像启发的方法,用于倍增非零径向指数的拉盖尔-高斯(LG)光束。我们从理论和实验上探索了二维(2D)周期性结构的 LG 光束衍射。特别是,我们测定了小开口率(OR)二维二元光栅的近场 LG 光束衍射图样。我们证明,入射的 LG 光束强度模式在某些塔尔博特平面上再现为光栅单个方孔的图像。我们还研究了分数塔尔博特平面和塔尔博特平面的数量对生成的二维复用 LG 模式阵列质量的影响。我们的理论预测与实验结果非常吻合。我们的方法可应用于光通信、光镊、多粒子捕获、筛选和微操作等领域。
Talbot-effect-based multiplication of Laguerre–Gaussian beams with non-zero radial indices: From theory to experimental realization
We present a Talbot self-imaging inspired method for multiplying Laguerre–Gaussian (LG) beams of non-zero radial indices. We explore theoretically and experimentally the LG beam diffraction from two-dimensional (2D) periodic structures. In particular, we determine near-field LG beam diffraction patterns from a 2D binary grating of a small opening ratio (OR). We demonstrate that incident LG beam intensity patterns are reproduced as images of individual square apertures of the grating in certain Talbot planes. We also investigate the impact of the number of fractional-Talbot and Talbot planes on the quality of the generated 2D array of multiplexed LG modes. Our theoretical predictions are in good agreement with our experiments. Our method can find applications in optical communication, optical tweezing, multi-particle trapping, screening, and micro-manipulation.
期刊介绍:
Optics Communications invites original and timely contributions containing new results in various fields of optics and photonics. The journal considers theoretical and experimental research in areas ranging from the fundamental properties of light to technological applications. Topics covered include classical and quantum optics, optical physics and light-matter interactions, lasers, imaging, guided-wave optics and optical information processing. Manuscripts should offer clear evidence of novelty and significance. Papers concentrating on mathematical and computational issues, with limited connection to optics, are not suitable for publication in the Journal. Similarly, small technical advances, or papers concerned only with engineering applications or issues of materials science fall outside the journal scope.