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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.
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Marine Laroche
Université Paris-Sud
R. Carminati
Centre National de la Recherche Scientifique
Jean‐Jacques Greffet
Centre National de la Recherche Scientifique
Physical Review Letters
Centre National de la Recherche Scientifique
École Centrale Paris
Laboratoire d'Énergétique Moléculaire et Macroscopique, Combustion
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Laroche et al. (Thu,) studied this question.
synapsesocial.com/papers/6a23ab72b7e293e61ca60a16 — DOI: https://doi.org/10.1103/physrevlett.96.123903