Controlling Electric Field and Photoemission at the Tips of Triangular Gold Antennas
Sponsor
C.M.S. is supported by the US Department of Defense’s Science, Mathematics and Research for Transformation (SMART) Scholarship for Service Program.
Published In
Plasmonics
Document Type
Citation
Publication Date
9-22-2020
Abstract
We show that the fields of surface plasmon polaritons (SPPs)—excited by infrared ultrafast laser light—can be highly concentrated at the corners of thin, micron-scale gold triangular platelets. We present multi-photon photoemission electron microscopy (nP-PEEM) images and finite element method (FEM) simulations that show that the magnitude of the SPP electric field can be adjusted over a large range via control of the polarization, wavelength, and angle of incidence of the applied laser light. As it is well known that the strength of SPP near-fields has a strong bearing on non-linear photoelectron emission rates, localized SPP fields might effectively be used as a nano-scale adjustable electron source.
Rights
© 2020 Springer Nature Switzerland
Locate the Document
DOI
10.1007/s11468-020-01292-7
Persistent Identifier
https://archives.pdx.edu/ds/psu/34320
Citation Details
Scheffler, C. M., Word, R. C., & Könenkamp, R. (2020). Controlling Electric Field and Photoemission at the Tips of Triangular Gold Antennas. Plasmonics. https://doi.org/10.1007/s11468-020-01292-7