Harmonic‐Assisted Super‐Resolution Rotational Measurement,Laser & Photonics Reviews

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Harmonic‐Assisted Super‐Resolution Rotational Measurement
Laser & Photonics Reviews ( IF 9.8 ) Pub Date : 2024-09-17 , DOI: 10.1002/lpor.202401050
Zhenyu Guo ₁ , Jiawei Wang ₁ , Weihua Zhao ₁ , Hong Gao ₁ , Zehong Chang ₁ , Yunlong Wang ₁ , Pei Zhang ₁

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Enhancing rotational measurement resolution and broadening the detectable spectral range are two critical and unresolved matters within the realm of motion perception. The rotational Doppler effect (RDE) is combined with the harmonic generation process to create a rotational measurement scheme that offers flexible detection wavelength conversion, exponential improvement of measurement resolution, and real‐time display of detection results. In the experiments, a cascaded second harmonic generation process is employed to attain a fourfold enhancement in rotational resolution and demonstrate how low‐cost silicon‐based detectors can be used for real‐time detection of infrared objects. This scheme employs a Gaussian beam within the nonlinear process to achieve high conversion efficiency, thereby enabling potential for subsequent cascade amplification. Additionally, it is fully compatible with existing RDE schemes, allowing for co‐amplification of rotational resolution at both the front‐end and back‐end. This research could offer a more precise and cost‐effective method for remote sensing detection.

中文翻译：

谐波辅助超分辨率旋转测量

提高旋转测量分辨率和扩大可检测光谱范围是运动感知领域中两个关键且尚未解决的问题。旋转多普勒效应（RDE）与谐波产生过程相结合，创建旋转测量方案，提供灵活的检测波长转换、测量分辨率的指数级提高以及检测结果的实时显示。在实验中，采用级联二次谐波生成过程来实现旋转分辨率的四倍增强，并演示了如何使用低成本硅基探测器来实时检测红外物体。该方案在非线性过程中采用高斯光束来实现高转换效率，从而为后续级联放大提供了潜力。此外，它与现有的 RDE 方案完全兼容，允许在前端和后端共同放大旋转分辨率。这项研究可以为遥感检测提供一种更精确、更具成本效益的方法。

更新日期：2024-09-17

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