Polarization Engineering of Thermal Radiation Using Metallic Photonic Crystals


  • This work is supported by the Director for Energy Research, Office of Basic Energy Sciences. The Ames Laboratory is operated for the U.S. Department of Energy by Iowa State University under contract No. DE-AC02-07CH11358. J.C.W.L. and C.T.C. acknowledge support from HKRGC grant No. 600403.


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Polarization engineering in thermal radiation is demonstrated by use of metallic photonic crystals, which enhance thermal radiation at specific frequencies with a high degree of polarization up to 0.5. The strong absorption induced by greatly reduced group velocity for a certain polarization is the underlying physical reason for this phenomenon.