Thermal emission of macroporous silicon chirped photonic crystals.
In this Letter we report on the thermal properties of macroporous silicon photonic crystals with the unit cell gradually varied along the pore axis. We show experimentally that arbitrarily large omnidirectional total-reflectance bands can be produced with such structures. We also demonstrate that those bands can be effectively used to reduce thermal radiation in large spectral bands.
Centro de Tecnologías Físicas, Unidad asociada ICMM-CSIC/UPV, Universidad Politécnica de Valencia (UPV),Avenida de los Naranjos s/n., 46022 Valencia, Spain. mgarin@fis.upv.es
Moisés
M
Garín
Trifon
T
Trifonov
David
D
Hernández
Angel
A
Rodriguez
Ramón
R
Alcubilla