Coherent thermal antenna using a photonic crystal slab

Rémi Carminati (1) , Jean-Jacques Greffet (1) , Marine Laroche (1)

1 EM2C - Laboratoire d'Énergétique Moléculaire et Macroscopique, Combustion

We show that a photonic crystal film can emit coherent thermal radiation. We demonstrate the key role of leaky waves existing at the air-photonic crystal interface. The frequency and direction of emission depend on the lattice parameters. This paves the way towards the design of coherent infrared antennas.

Mots clés: LAMELLAR METALLIC GRATINGS; SURFACE-PLASMONS; EMISSION; RADIATION; LIGHT; DIFFRACTION; WAVES; PLANE

Domaines: Mécanique des structures [physics.class-ph]; Mécanique des structures [physics.class-ph]

Rémi Carminati, Jean-Jacques Greffet, Marine Laroche. Coherent thermal antenna using a photonic crystal slab. Physical Review Letters, 2006, 96, pp.123903. ⟨10.1103/PhysRevLett.96.123903⟩. ⟨hal-00133268⟩