GaN微盘模式分布与强度研究  

The Study of Mode Distribution and Intensity in GaN Microdisks

作　　者：方华杰 高鹏[1] 蒋府龙 刘梦涵[1] 徐儒 周婧 张熬 陈鹏[1,2] 刘斌[1] 修向前[1] 谢自立[1] 韩平[1] 施毅[1] 张荣[1] 郑有炓[1] FANG Huajie;GAO Peng;JIANG Fulong;LIU Menghan;XU Ru;ZHOU Jing;ZHANG Ao;CHEN Peng;XIU Xiangqian;XIE Zili;HAN Ping;SHI Yi;ZHANG Rong;ZHENG Youdou(Key Laboratory of Advanced Photonic and Electronic Materials,School of Electronic Science and Engineering,Nanjing University,Nanjing 210093,CHN;Institute of Optoelectronics at Yangzhou,Nanjing University,Yangzhou Jiangsu 255009,CHN)

机构地区：[1]南京大学电子科学与工程学院江苏省光电功能材料重点实验室,南京210093 [2]南京大学扬州光电研究院,江苏扬州225009

出　　处：《光电子技术》2018年第3期162-166,共5页Optoelectronic Technology

基　　金：国家重点研发计划项目(2016YFB0400100;2016YFB0400602);国家自然科学基金(61674076;61422401;51461135002);江苏省自然科学基金(BY2013077;BK20141320;BE2015111);固态照明与节能电子学协同创新中心;江苏省重点学科资助计划;江苏省六大人才高峰(XYDXX-081);集成光电子学国家重点实验室开放课题(IOSKL2017KF03);南京大学扬州光电研究院研发基金;国网山东省电力公司电力科学研究院研发基金

摘　　要：使用时域有限差分方法系统地研究了直径从2μm到50μm的GaN基微盘在蓝光波段的模式强度和分布。设计了一种可以比拟微盘内高密度激子分布的偶极子排布方式,使其能够激发盘内所有光学模式。研究了盘内最大激发强度和有效共振频率数量随微盘直径的变化关系,揭示了盘内模式间的竞争关系,并给出了微盘内三种典型的激发后的光场分布。The finite-difference time-domain method was used to systematically study the intensity and distribution of the GaN microdisks with diameters from 2μm to 50μm in the blue light region.A dipole arrangement that could match the distribution of high-density exciton within the microdisk was designed to enable it to excite all optical modes in the disk.The relationship of the maximum excitation intensity and the number of effective resonance frequencies in the disk with the diameter of the microdisk was studied,and the competitive relationship among the intradiscal patterns was revealed.Three typical excitation field distributions in the microdisk were presented.

关 键 词：回音壁模式 时域有限差分法 光学微腔 氮化镓 

分 类 号：TN241[电子电信—物理电子学]