Abstract
For what is believed to be the first time, a three-dimensional tungsten photonic crystal is demonstrated to emit light effectively at wavelength . At a bias of , the thermal emission exhibits a full width at half-maximum of . Within this narrow band, the emitted optical power is 4.5 W and the electrical-to-optical conversion efficiency is per emitting surface. This unique emission is made possible by a large, absolute bandgap in the infrared and flat photonic dispersion near the band edges and in a narrow absorption band.
© 2003 Optical Society of America
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