Title

Digital plasmonic holography with iterative phase retrieval for sensing

Document Type

Article

Abstract

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.

Publication Title

Optics Express

Volume

29

Issue

3

First Page

3026

Last Page

3037

Publication Date

2-1-2021

DOI

10.1364/OE.412844

E-ISSN

10944087

PubMed ID

33770910

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