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基于改进型简并腔激光器产生随机电磁光束。

Generation of stochastic electromagnetic beams based on modified degenerate cavity lasers.

作者信息

Pu Haosen, Sasaki Osami, Suzuki Takamasa, Choi Samuel, Ji Xuanxuan

机构信息

Graduate School of Science and Technology, Niigata University, Ikarashi-2-No-Cho, Nishiku, Niigata City, Niigata, 950-2181, Japan.

出版信息

Sci Rep. 2024 Aug 12;14(1):18680. doi: 10.1038/s41598-024-68664-5.

DOI:10.1038/s41598-024-68664-5
PMID:39134568
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11319665/
Abstract

This study introduces a technique for generating stochastic electromagnetic (SEM) beams using a modified degenerate cavity laser in which one mirror is substituted with a spatial light modulator (SLM). We propose two methods to manipulate the spatial coherence of SEM beams: the first involves adjusting the size of a spatial filter within the laser cavity, which alters the number of oscillating transverse modes and thus varies the spatial coherence. The second method employs phase modulation by applying a dynamic random phase to the SLM. This dual approach allows for precise control over the spatial coherence properties of SEM beams. Experimental results demonstrate the generation of SEM beams using an SLM within a modified degenerate cavity laser and reveal a correlation between two orthogonal polarization components of the beams.

摘要

本研究介绍了一种使用改进的简并腔激光器产生随机电磁（SEM）光束的技术，其中一个反射镜被空间光调制器（SLM）取代。我们提出了两种操纵SEM光束空间相干性的方法：第一种方法是调整激光腔内空间滤波器的尺寸，这会改变振荡横向模式的数量，从而改变空间相干性。第二种方法是通过向SLM施加动态随机相位来进行相位调制。这种双重方法允许对SEM光束的空间相干特性进行精确控制。实验结果证明了在改进的简并腔激光器中使用SLM产生SEM光束，并揭示了光束两个正交偏振分量之间的相关性。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/3c4113f9858e/41598_2024_68664_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/28f892debedc/41598_2024_68664_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/5f2e2ec2fb8f/41598_2024_68664_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/fb52aed23960/41598_2024_68664_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/53a50dcb3564/41598_2024_68664_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/b2e572e989a6/41598_2024_68664_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/4cf51f5a9093/41598_2024_68664_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/1d7b5ce24051/41598_2024_68664_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/d59ba6c65166/41598_2024_68664_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/3c4113f9858e/41598_2024_68664_Fig9_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/28f892debedc/41598_2024_68664_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/5f2e2ec2fb8f/41598_2024_68664_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/fb52aed23960/41598_2024_68664_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/53a50dcb3564/41598_2024_68664_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/b2e572e989a6/41598_2024_68664_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/4cf51f5a9093/41598_2024_68664_Fig6_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/1d7b5ce24051/41598_2024_68664_Fig7_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/d59ba6c65166/41598_2024_68664_Fig8_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/56f1/11319665/3c4113f9858e/41598_2024_68664_Fig9_HTML.jpg

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