Optimizing the top profile of a nanowire for maximum forward emission  

作　　者：王东林 俞重远 刘玉敏 郭晓涛 曹贵 冯昊 

机构地区：[1]Key Laboratory of Information Photonics and Optical Communications,Beijing University of Posts and Telecommunications

出　　处：《Chinese Physics B》2011年第11期386-390,共5页中国物理B（英文版）

基　　金：supported by the National High Technology Research and Development Program of China(Grant No.2009AA03Z405);the National Natural Science Foundation of China(Grant Nos.60971068,60908028,and 10979065);the Fundamental Research Funds for the Central Universities of China(Grant No.BUPT2009RC0411);Program for New Century Excellent Talents in University of China(Grant No.NTCE-10-0261);the Chinese Universities Scientific Fund(Grant No.2011RC0402)

摘　　要：The optimal top structure of a nanowire quantum emitter single photon source is significant in improving performance. Based on the axial symmetry of a cylindrical nanowire, this paper optimizes the top profile of a nanowire for the maximum forward emission by combining the geometry projection method and the finite element method. The results indicate that the nanowire with a cambered top has the stronger emission in the forward direction, which is helpful to improve the photon collection effciency.The optimal top structure of a nanowire quantum emitter single photon source is significant in improving performance. Based on the axial symmetry of a cylindrical nanowire, this paper optimizes the top profile of a nanowire for the maximum forward emission by combining the geometry projection method and the finite element method. The results indicate that the nanowire with a cambered top has the stronger emission in the forward direction, which is helpful to improve the photon collection effciency.

关 键 词：NANOWIRE photon collection 

分 类 号：O488[理学—固体物理]