Silicon Nanoantenna Mix Arrays for a Trifecta of Quantum Emitter Enhancements

Authors:
Publisher website
Google Scholar
Abstract
Dielectric nanostructures have demonstrated optical antenna effects due to Mie resonances. Previous work has exhibited enhancements in absorption, emission rates and directionality with practical limitations. In this paper, we present a Si mix antenna array to achieve a trifecta enhancement of ∼1200-fold with a Purcell factor of ∼47. The antenna design incorporates ∼10 nm gaps, within which fluorescent molecules strongly absorb the pump laser energy through a resonant mode. In the emission process, the antenna array increases the radiative decay rates of the fluorescence molecules via a Purcell effect and provides directional emission through a separate mode. This work could lead to novel CMOS-compatible platforms to enhance fluorescence for biological and chemical applications.
All Related Versions
Funding Information
  • Agency for Science, Technology and Research (A*STAR career development award (CDA), A20E5c0093)
  • Science and Engineering Research Council (1527300025)

This publication has 58 references indexed in Scilit: