Purcell effect for active tuning of light scattering from semiconductor optical antennas

In this study, we harness the electric and magnetic resonances of such antennas to achieve a very strong dependence of the optical properties on the external environment. Specifically, we illustrate how the resonant scattering wavelength of single silicon nanowires is tunable across the entire visible spectrum by simply moving the height of the nanowires above a metallic mirror. We apply this concept by using a nanoelectromechanical platform to demonstrate active tuning.

Source: ScienceNOW - December 14, 2017 Category: Science Authors: Holsteen, A. L., Raza, S., Fan, P., Kik, P. G., Brongersma, M. L. Tags: Physics reports Source Type: news