All-dielectric free-electron-driven holographic light sources

• Main Authors: Clarke, Brendan P., Gholipour, Behrad, MacDonald, Kevin F., Zheludev, Nikolay I.
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2019
• Subjects: DRNTU::Science::Physics; Holographic Light; Dielectric Materials
• Online Access: https://hdl.handle.net/10356/89111; http://hdl.handle.net/10220/47678
• Institution: Nanyang Technological University

It has recently been shown that holographically nanostructured surfaces can be employed to control the wavefront of (predominantly plasmonic) optical-frequency light emission generated by the injection of medium-energy electrons into a gold surface. Here, we apply the concept to manipulation of the spatial distribution of transition radiation emission from high-refractive-index dielectric/semiconductor target materials, finding that concomitant incoherent luminescence emission at the same wavelength is unperturbed by holographic surface-relief structures, thereby deriving a means of discriminating between the two emission components.