Three-dimensional photonic-crystal emission through thermal excitation.
A three-dimensional tungsten photonic crystal is thermally excited and shown to emit light at a narrow band, lambda = 3.3-4.25 microm. 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.
Lin
Shawn-Yu
SY
MS 0603, Sandia National Laboratories, PO Box 5800, Albuquerque, New Mexico 87185, USA. slin@sandia.gov
Fleming
J G
JG
El-Kady
I
I