Rapid Imaging of Pulsed Terahertz Radiation with Spatial Light Modulators and Neural Networks,ACS Photonics

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Rapid Imaging of Pulsed Terahertz Radiation with Spatial Light Modulators and Neural Networks
ACS Photonics ( IF 6.5 ) Pub Date : 2021-11-01 , DOI: 10.1021/acsphotonics.1c00634
Rayko Ivanov Stantchev ₁ , Kaidi Li ₁ , Emma Pickwell-MacPherson _{1,

2}

Affiliation

We report the first use of a convolutional neural network for terahertz (THz) imaging combined with a single-pixel camera to achieve high quality hyperspectral THz imaging 10× faster than the current commercial systems, with faster potential only limited by noise. Imaging with a spatial light modulator (SLM) relies on projecting a set of spatial patterns onto an object and recording the transmission with a single-pixel detector, and an optical delay unit (ODU) is used to obtain the terahertz time-of-flight information. A key breakthrough in this work is to synchronize the equipment to not need any time to instruct the ODU to move while projecting the patterns.

中文翻译：

使用空间光调制器和神经网络对脉冲太赫兹辐射进行快速成像

我们报告了首次将卷积神经网络用于太赫兹 (THz) 成像与单像素相机相结合，以实现比当前商业系统快 10 倍的高质量高光谱太赫兹成像，更快的潜力仅受噪声限制。使用空间光调制器 (SLM) 成像依赖于将一组空间模式投影到物体上并使用单像素检测器记录传输情况，并使用光学延迟单元 (ODU) 获得太赫兹飞行时间信息。这项工作的一个关键突破是使设备同步，在投影图案的同时不需要任何时间来指示ODU移动。

更新日期：2021-11-17

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