原子级MoS₂平面法布里-珀罗腔中基于相位奇点实现的偏振可切换模拟空间微分
Phase singularity enabled polarization switchable analog spatial differentiation in an atomic MoS$_2$ planar Fabry-Pérot cavity
AI总结：
研究利用集成平面F-P腔的单层MoS₂，借助偏振相关相位奇点，实现斜入射下偏振可切换模拟空间微分，通过切换入射偏振实现输入图像的一阶和二阶导数，为可调谐光学计算提供新策略，可用于图像处理等。
AI中文摘要：
可重构模拟光学计算需要在诸如一阶和二阶空间微分等核心数学运算之间快速高效地切换。在此，我们展示了一个集成平面法布里-珀罗（F-P）腔的单层MoS₂，其在斜入射下执行偏振可切换模拟空间微分。通过利用偏振相关的相位奇点，该器件在相同操作条件下满足不同阶微分的不同光学传递函数。结果，通过简单切换入射偏振在实验上实现了输入图像的一阶和二阶导数。这些结果确立了平面腔作为紧凑的可重构空间微分器，其计算阶数仅由光偏振控制。此方法为可调谐光学计算提供了快速、便捷且集成友好的策略，并实现了用于图像处理的偏振可切换边缘检测，在实时目标识别、特征提取和光学数据压缩方面有潜在应用。
英文摘要：
Reconfigurable analog optical computing requires rapid and efficient switching between core mathematical operations, such as first- and second-order spatial differentiation. Here, we demonstrate a monolayer MoS$_2$ integrated a planar Fabry-Pérot (F-P) cavity that performs polarization switchable analog spatial differentiation under oblique incidence. By exploiting polarization dependent phase singularities, the device satisfies distinct optical transfer functions for different-order differentiation at the same operating condition. As a result, first-order and second-order derivatives of input images are experimentally realized by simply switching the incident polarization. These results establish the planar cavity as a compact reconfigurable spatial differentiator, whose computational order is controlled solely by light polarization. This approach provides a fast, convenient, and integration friendly strategy for tunable optical computing, and enables polarization switchable edge detection for image processing, with potential applications in real-time object recognition, feature extraction, and optical data compression.
