Increasing applicability of slow light in molecular aggregate nanofilms with two-exciton dynamics
We study the slow-light performance in the presence of exciton – exciton interaction in films of linear molecular aggregates at the nanometer scale. In particular, we consider a four-level model to describe the creation/annihilation of two-exciton states that are relevant for high-intensity fields....
| Authors: | , , |
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| Format: | article |
| Publication Date: | 2016 |
| Country: | España |
| Institution: | Universidad Complutense de Madrid (UCM) |
| Repository: | Docta Complutense |
| Language: | English |
| OAI Identifier: | oai:docta.ucm.es:20.500.14352/23081 |
| Online Access: | https://hdl.handle.net/20.500.14352/23081 |
| Access Level: | Open access |
| Keyword: | 538.9 621.38 537.8 004.42 Slow-light Molecular aggregates Exciton dynamics Física (Física) Electromagnetismo Electrónica (Física) Física de materiales Física del estado sólido Óptica (Física) Programación de ordenadores (Física) Química física (Física) 22 Física 2202 Electromagnetismo 2211 Física del Estado Sólido 2209.19 Óptica Física 2210 Química Física |
| Summary: | We study the slow-light performance in the presence of exciton – exciton interaction in films of linear molecular aggregates at the nanometer scale. In particular, we consider a four-level model to describe the creation/annihilation of two-exciton states that are relevant for high-intensity fields. Numerical simulations show delays comparable to those obtained for longer propagation distances in other media. Two-exciton dynamics could lead to larger fractional delays, even in presence of disorder, in comparison to the two-level approximation. We conclude that slow-light performance is a robust phenomenon in these systems under the increasing complexity of the two-exciton dynamics. |
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