Lombardet, BenoitHoudre, RomualdDunbar, Liza Andrea2017-06-132017-06-132017-06-132006https://infoscience.epfl.ch/handle/20.500.14299/138345A photonic crystal structure for condensing electromagnetic radiation comprising a modulated square-shaped lattice and a corresponding condensing device are disclosed.patentEP168410234933374