Metal nanoantennas make it possible to manipulate the light, and in particular to control its absorption. According to Kirchhoff's law, emissivity equals absorptivity and nanoantennas may become light sources operating by thermal emission. These sources exhibit properties that deviate from those of the ideal blackbody described by Planck's law.
We will show that it is possible to develop a metasurface based on metal-insulator-metal nanoantennas, wherein each antenna has dimensions smaller than the wavelength, and acts as a transmitter at given polarization state and wavelength of light, independent of the adjacent antennas. It is thus possible to obtain spatial, spectral and polarization control of the emitted light, and thus to encode complex images. Other nanoantennas concepts will be presented, such as optical Helmholtz resonators.
Riad Haïdar and Patrick Bouchon, "Resonant nano-antennas for shaping the emission of light (Conference Presentation)," Proc. SPIE 10111, Quantum Sensing and Nano Electronics and Photonics XIV, 101111P (Presented at SPIE OPTO: February 01, 2017; Published: 28 April 2017); https://doi.org/10.1117/12.2256215.5394049043001.
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