光子晶体中自发发光的同时抑制与重新分布

Simultaneous inhibition and redistribution of spontaneous light emission in photonic crystals.

作者信息

Fujita Masayuki, Takahashi Shigeki, Tanaka Yoshinori, Asano Takashi, Noda Susumu

机构信息

Department of Electronic Science and Engineering, Kyoto University, Katsura, Nishikyo-Ku, Kyoto 615-8510, Japan.

出版信息

Science. 2005 May 27;308(5726):1296-8. doi: 10.1126/science.1110417.

DOI:10.1126/science.1110417

PMID:15919989

Abstract

Inhibiting spontaneous light emission and redistributing the energy into useful forms are desirable objectives for advances in various fields, including photonics, illuminations, displays, solar cells, and even quantum-information systems. We demonstrate both the "inhibition" and "redistribution" of spontaneous light emission by using two-dimensional (2D) photonic crystals, in which the refractive index is changed two-dimensionally. The overall spontaneous emission rate is found to be reduced by a factor of 5 as a result of the 2D photonic bandgap effect. Simultaneously, the light energy is redistributed from the 2D plane to the direction normal to the photonic crystal.

摘要

抑制自发发光并将能量重新分配为有用的形式是包括光子学、照明、显示、太阳能电池甚至量子信息系统在内的各个领域取得进展的理想目标。我们通过使用二维（2D）光子晶体展示了自发发光的“抑制”和“重新分配”，其中折射率在二维方向上发生变化。由于二维光子带隙效应，总的自发发射率降低了5倍。同时，光能从二维平面重新分配到垂直于光子晶体的方向。