Transient Optical Characteristics of Broad Absorption Band Excitons Modulated by Micro-cavity  

作　　者：LI Kaijiao ZHANG Zhenyu CUI Haining WANG Haiyu 

机构地区：[1]State Key Laboratory on Integrated Optoeleetronies, College of Electronic Science and Engineering, Jilin University, Changchun 130012, P. R. China [2]College of Physics, Jilin University, Changchun 130012, P. R. China [3]Key Laboratory of Optoelectronie Devices and Systems of Ministry of Education and Guangdong Province College of Optoeleetronic Engineering, Shenzhen University, Shenzhen 518060, R R. China

出　　处：《Chemical Research in Chinese Universities》2018年第6期978-982,共5页高等学校化学研究（英文版）

基　　金：Supported by the State Key Program for Basic Research of China（Nos.2014CB921302, 2011CB013003）, the National Natural Science Foundation of China（Nos.21273096, 21473077, 21773087, 61378053）, the Postdoctoral Science Foundation of China （No.2018M630980） and the Doctoral Fund of the Ministry of Education of China（No.20130061110048）.

摘　　要：The understanding of light-matter interaction within micro-cavity lays the basic groundwork for many future photon-related technologies and applications. We prepared low quality metal-insulator-metal（MIM） micro-cavity consisting massive two-level broad absorption band dye（Nile Red） excitons, which randomly dispersed in SU-8 polymer negative resist matrix and measured their optical characteristics. New binate transmission peaks with large energy separation（so-called Rabi-splitting phenomenon） and their angular anti-crossing behavior in con- sequence of the interaction between dye excitons and confined photons were observed. It was also confirmed that the separated energy can be tuned by changing the doped exciton concentrations. Time-resolved transient absorption measurements showed that such an interaction is indeed a coherent one but rather a strong coupling one and one can modulate such a coherent mechanism by easily adjusting the detuinng between dye excitons and confined cavity photons. This work may provide a comprehensive and deep understanding for such massive broad absoprtion band excitons-doped MIM micro-cavities and represent a further step to realize optical cavity-modulated devices in future.The understanding of light-matter interaction within micro-cavity lays the basic groundwork for many future photon-related technologies and applications. We prepared low quality metal-insulator-metal（MIM） micro-cavity consisting massive two-level broad absorption band dye（Nile Red） excitons, which randomly dispersed in SU-8 polymer negative resist matrix and measured their optical characteristics. New binate transmission peaks with large energy separation（so-called Rabi-splitting phenomenon） and their angular anti-crossing behavior in con- sequence of the interaction between dye excitons and confined photons were observed. It was also confirmed that the separated energy can be tuned by changing the doped exciton concentrations. Time-resolved transient absorption measurements showed that such an interaction is indeed a coherent one but rather a strong coupling one and one can modulate such a coherent mechanism by easily adjusting the detuinng between dye excitons and confined cavity photons. This work may provide a comprehensive and deep understanding for such massive broad absoprtion band excitons-doped MIM micro-cavities and represent a further step to realize optical cavity-modulated devices in future.

关 键 词：Interaction EXCITON MICRO-CAVITY Modulation Transient 

分 类 号：TN929.1[电子电信—通信与信息系统] O471.3[电子电信—信息与通信工程]