Universität zu Köln

Le Roux, Florian ORCID: 0000-0002-5473-5972, Mischok, Andreas ORCID: 0000-0003-4725-7404, Tenopala-Carmona, Francisco ORCID: 0000-0002-4603-034X and Gather, Malte C. ORCID: 0000-0002-4857-5562 (2025). Schlieren texture and topography induced confinement in an organic exciton-polariton laser. Nature Communications, 16 (1). pp. 1-10. Springer Nature. ISSN 2041-1723

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Abstract

[Article number: 811] Non-linearities in organic exciton-polariton microcavities represent an attractive platform for quantum devices. However, progress in this area hinges on the development of material platforms for high-performance polariton lasing, scalable and sustainable fabrication, and ultimately strategies for electrical pumping. Here, we show how introducing Schlieren texturing and a rough intra-cavity topography in a liquid crystalline conjugated polymer enables strong in-plane confinement of polaritons and drastic enhancement of the lasing properties. In high- Q distributed Bragg reflector microcavities, polariton lasing was observed at unprecedented thresholds of 136 fJ per pulse. Morphology tuning also permitted polariton lasing in more lossy metallic microcavities while maintaining a competitive lasing threshold. The facile fabrication of these cavities will drastically reduce the complexity of integrating polariton lasers with other structures and the high conductivity of metallic mirrors may provide a route to electrical pumping.

Item Type:	Article
Creators:	Creators Email ORCID ORCID Put Code Le Roux, Florian UNSPECIFIED https://orcid.org/0000-0002-5473-5972 UNSPECIFIED Mischok, Andreas UNSPECIFIED https://orcid.org/0000-0003-4725-7404 UNSPECIFIED Tenopala-Carmona, Francisco UNSPECIFIED https://orcid.org/0000-0002-4603-034X UNSPECIFIED Gather, Malte C. UNSPECIFIED https://orcid.org/0000-0002-4857-5562 UNSPECIFIED
URN:	urn:nbn:de:hbz:38-794283
Identification Number:	10.1038/s41467-025-55875-1
Journal or Publication Title:	Nature Communications
Volume:	16
Number:	1
Page Range:	pp. 1-10
Date:	18 January 2025
Publisher:	Springer Nature
ISSN:	2041-1723
Language:	English
Faculty:	Faculty of Mathematics and Natural Sciences
Divisions:	Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Biochemistry
Subjects:	Chemistry and allied sciences Life sciences
['eprint_fieldname_oa_funders' not defined]:	Publikationsfonds UzK
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/79428