Mid-infrared nanophotonics based on antennas and transmission lines

Here, we demonstrate that by reducing the size down to the micrometer range, these devices can be operated at infrared frequencies (-30 THz). We apply our recently introduced vector near field microscopy technique for directly visualizing the reception and transport of infrared energy. The combination of antenna plus transmission line is a promising platform technology for designing future mid infrared devices which require subwavelength-scale integration.