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Updated: Jul 19, 2025

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Shaping the Amplitude and Phase of Laser Beams by Using a Phase-only Spatial Light Modulator

Published on: January 28, 2019

使用空间不连贯的衍射处理器进行通用线性强度转换.

Md Sadman Sakib Rahman^1,2,3, Xilin Yang^1,2,3, Jingxi Li^1,2,3

¹Electrical and Computer Engineering Department, University of California, Los Angeles, CA, 90095, USA.

Light, science & applications

|August 15, 2023

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此摘要是机器生成的。

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研究人员开发了一种使用空间不连贯光进行线性强度转换的衍射光学处理器. 这项技术使视觉信息的全光学处理成为可能,即使在自然光线条件下.

科学领域:

光学和光子学在光学和光子学.
光学工程是指光学工程.
计算成像技术的成像

背景情况:

衍射光学网络可以在空间连贯的光下执行复杂的线性转换.
设计这样的网络用于空间不连贯的光,这在自然环境中更常见,提出了独特的挑战.

研究的目的:

设计和演示一种衍射光学处理器,能够使用空间不连贯的光进行任意的线性强度转换.
探索这些网络在全光学处理任务中的潜力,包括图像分类.

主要方法:

利用数值模拟和深度学习来监督训练衍射网络.
研究了衍射特征数量 (N) 与输入/输出视野 (N_i,N_o) 之间的关系.
设计用于同时处理多个波长和手写数字分类的网络.

主要成果:

证明空间不连贯的衍射网络可以近似任意的线性强度转换.
在不连贯的照明下使用全光衍射网络对手写数字进行分类,测试准确度达到了>95%.
展示了这些网络能够同时处理多个波长的强度信息的能力.

结论:

空间不连贯的衍射网络为所有光学线性强度转换提供了可行的方法.

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Direct Imaging of Laser-driven Ultrafast Molecular Rotation

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这些网络对开发在自然,不连贯的光线下有效运行的视觉处理器具有重大前景.

展示的数字分类突出了这项技术在机器视觉中的实际应用.