Propagation of the blackbody radiation in a periodic metamaterial
Rectification of electromagnetic radiation in gapless materials is a subject of a great engineering interest. Its possible applications are the ultrafast detectors of IR and teraherz radiation, high-efficiency harvesting of the solar radiation and the waste heat, for instance from exothermal industrial processes. All these processes lie in the terahertz or IR region of frequencies. One of the principal limitations of using of rectennas for harvesting electromagnetic radiation is a limited coherence of most possible sources. The authors in their previous paper predicted an enhancement of coherence when a δ-correlated noise modeling blackbody radiation passes through a periodic grating at a distance comparable to Talbot distance LT = δT L2 where L is a period of the lattice and λT=c·h/kBT is a Wien length for the temperature T.
Optics InfoBase Conference Papers
Lerner, P. B.; Cutler, P. H.; and Miskovsky, N. M., "Propagation of the blackbody radiation in a periodic metamaterial" (2018). Kean Publications. 1503.