Propagating surface plasmon waves have been used for many applications including imaging and sensing. However, direct in-plane imaging of micro-objects with surface plasmon waves suffers from the lack of simple, two-dimensional lenses, mirrors, and other optical elements. In this paper, we apply lensless digital holographic techniques and leakage radiation microscopy to achieve in-plane surface imaging with propagating surface plasmon waves. As plasmons propagate in two-dimensions and scatter from various objects, a hologram is formed over the surface. Iterative phase retrieval techniques applied to this hologram remove twin image interference for high-resolution in-plane imaging and enable further applications in real-time plasmonic phase sensing.

中文翻译：

---

带有迭代相位检索的数字等离子全息术，用于传感

传播的表面等离激元波已用于许多应用，包括成像和传感。然而，利用表面等离激元波直接对微对象进行平面内成像的原因是缺少简单的二维透镜，反射镜和其他光学元件。在本文中，我们应用无透镜数字全息技术和泄漏辐射显微镜技术，利用传播的表面等离激元波实现面内成像。随着等离激元在二维中传播并从各种物体中散射出来，全息图会在表面上形成。应用于此全息图的迭代相位检索技术消除了用于高分辨率平面成像的孪生图像干扰，并使得其在实时等离子体相位感测中能够进一步应用。