Strong exciton-photon coupling in organic single crystal microcavity with high molecular orientation
Strong exciton-photon coupling in organic single crystal microcavity with high molecular orientation
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DOI：
10.1063/1.4960659
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发表时间：
2016-08-08
影响因子：
4
通讯作者：
Hotta, Shu
中科院分区：
文献类型：
--
作者：
Goto, Kaname;Yamashita, Kenichi;Hotta, Shu
在高度取向的有机单晶微腔中观察到了强的激子-光子耦合。该微腔由叠层在高反射分布布拉格反射器上的噻吩/亚苯基共聚低聚物（TPCO）单晶组成。在TPCO晶体中，分子跃迁偶极子沿相对于主晶面的水平方向沿着被强极化。这种偶极极化导致激子跃迁和光学常数的显著大的各向异性。特别是各向异性激子跃迁被发现提供了强烈的增强与腔模的耦合，这是由拉比分裂能量大到类似于100 meV，即使在“半垂直腔面发射激光”微腔结构证明。出版社：AIP Publishing
Strong exciton-photon coupling has been observed in a highly oriented organic single crystal microcavity. This microcavity consists of a thiophene/phenylene co-oligomer (TPCO) single crystal laminated on a high-reflection distributed Bragg reflector. In the TPCO crystal, molecular transition dipole was strongly polarized along a certain horizontal directions with respect to the main crystal plane. This dipole polarization causes significantly large anisotropies in the exciton transition and optical constants. Especially the anisotropic exciton transition was found to provide the strong enhancement in the coupling with the cavity mode, which was demonstrated by a Rabi splitting energy as large as similar to 100meV even in the "half-vertical cavity surface emitting lasing" microcavity structure. Published by AIP Publishing.