期刊
OPTICS LETTERS
卷 28, 期 20, 页码 1909-1911出版社
Optica Publishing Group
DOI: 10.1364/OL.28.001909
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A three-dimensional tungsten photonic crystal is thermally excited and shown to emit light at a narrow band, lambda = 3.3-4.25 mum. The emission is experimentally observed to exceed that of the free-space Planck radiation over a wide temperature range, T = 475-850 K. It is proposed that an enhanced density of state associated with the propagating electromagnetic Bloch waves in the photonic crystal is responsible for this experimental finding. (C) 2003 Optical Society of America.
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