Anisotropic light-matter coupling and below-threshold excitation dynamics in an organic crystal microcavity

Organic semiconductors are promising candidates as platforms for room temperature polaritonic devices. An issue for practical implementation of organic polariton devices is the lowering of condensation threshold. Here we investigate anisotropic light-matter coupling characteristics in an organic cry...

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Published inOptics express Vol. 29; no. 17; p. 26433
Main Authors Tagami, Tomoya, Ueda, Yusuke, Imai, Keita, Takahashi, Shun, Mizuno, Hitoshi, Yanagi, Hisao, Obuchi, Takeshi, Nakayama, Masaaki, Yamashita, Kenichi
Format Journal Article
LanguageEnglish
Published 16.08.2021
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ISSN1094-4087
1094-4087
DOI10.1364/OE.425461

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Summary:Organic semiconductors are promising candidates as platforms for room temperature polaritonic devices. An issue for practical implementation of organic polariton devices is the lowering of condensation threshold. Here we investigate anisotropic light-matter coupling characteristics in an organic crystal microcavity showing strong molecular orientation. Furthermore, the below-threshold excitation dynamics are investigated to clarify the spontaneous transition pathways from reservoir to polariton states. Time-resolved photoluminescence measurements reveal that photonic/excitonic hybrid transition processes coexist in the microcavity system. This finding provides valuable insights into a detailed understanding of polariton dynamics and help in the design of polaritonic devices showing a low-threshold condensed phase.
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ISSN:1094-4087
1094-4087
DOI:10.1364/OE.425461