Electrically driven optical antennas

摘要: Researchers demonstrate an electrically driven nanoscale transmitter based on the broadband quantum shot noise of electrons tunnelling across a feed gap. Unlike radiowave antennas, so far optical nanoantennas cannot be fed by electrical generators. Instead, they are light1 or indirectly via excited discrete states in active materials2,3 their vicinity. Here we direct driving in-plane antenna quantum-shot its The spectrum emitted photons is determined geometry and can tuned applied voltage. Moreover, direction polarization light emission controlled resonance, which also improves external efficiency up to two orders magnitude. one-material planar design offers facile integration circuits thus represents new paradigm for interfacing at nanometre scale, example on-chip wireless communication highly configurable subwavelength photon sources.