| Autor: |
Hsieh ML; Department of Photonics, National Chiao-Tung University, Hsinchu, Taiwan. Department of Physics, Applied Physics and Astronomy, Rensselaer Polytechnic Institute, Troy, NY 12180, USA., Bur JA, Du Q, John S, Lin SY |
| Jazyk: |
angličtina |
| Zdroj: |
Nanotechnology [Nanotechnology] 2016 Oct 14; Vol. 27 (41), pp. 415204. Date of Electronic Publication: 2016 Sep 08. |
| DOI: |
10.1088/0957-4484/27/41/415204 |
| Abstrakt: |
We report experimental observation of intrinsic Bloch-mode emission from a 3D tungsten photonic crystal at low thermal excitation. After the successful removal of conventional metallic emission (normal emission), it is possible to make an accurate comparison of the Bloch-mode and the normal emission. For all biases, we found that the emission intensity of the Bloch-mode is higher than that of the normal emission. The Bloch-mode emission also exhibits a slower dependence on [Formula: see text] than that of the normal emission. The observed higher emission intensity and a different T-dependence is attributed to Bloch-mode assisted emission where emitters have been located into a medium having local density of states different than the isotropic case. Furthermore, our finite-difference time-domain (FDTD) simulation shows the presence of localized spots at metal-air boundaries and corners, having intense electric field. The enhanced plasmonic field and local non-equilibrium could induce a strong thermally stimulated emission and may be the cause of our unusual observation. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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