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An exciton-polariton laser based on biologically produced fluorescent protein

Please always quote using this URN: urn:nbn:de:bvb:20-opus-171305
  • Under adequate conditions, cavity polaritons form a macroscopic coherent quantum state, known as polariton condensate. Compared to Wannier-Mott excitons in inorganic semiconductors, the localized Frenkel excitons in organic emitter materials show weaker interaction with each other but stronger coupling to light, which recently enabled the first realization of a polariton condensate at room temperature. However, this required ultrafast optical pumping, which limits the applications of organic polariton condensates. We demonstrate roomUnder adequate conditions, cavity polaritons form a macroscopic coherent quantum state, known as polariton condensate. Compared to Wannier-Mott excitons in inorganic semiconductors, the localized Frenkel excitons in organic emitter materials show weaker interaction with each other but stronger coupling to light, which recently enabled the first realization of a polariton condensate at room temperature. However, this required ultrafast optical pumping, which limits the applications of organic polariton condensates. We demonstrate room temperature polariton condensates of cavity polaritons in simple laminated microcavities filled with biologically produced enhanced green fluorescent protein (eGFP). The unique molecular structure of eGFP prevents exciton annihilation even at high excitation densities, thus facilitating polariton condensation under conventional nanosecond pumping. Condensation is clearly evidenced by a distinct threshold, an interaction-induced blueshift of the condensate, long-range coherence, and the presence of a second threshold at higher excitation density that is associated with the onset of photon lasing.show moreshow less

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Metadaten
Author: Christof P. Dietrich, Anja Steude, Laura Tropf, Marcel Schubert, Nils M. Kronenberg, Kai Ostermann, Sven Höfling, Malte C. Gather
URN:urn:nbn:de:bvb:20-opus-171305
Document Type:Journal article
Faculties:Fakultät für Physik und Astronomie / Physikalisches Institut
Language:English
Parent Title (English):Science Advances
Year of Completion:2016
Volume:2
Issue:8
Pagenumber:e1600666
Source:Science Advances 2016, Vol. 2, No. 8, e1600666. DOI: 10.1126/sciadv.1600666
DOI:https://doi.org/10.1126/sciadv.1600666
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Tag:enhanced green fluorescent protein; photon lasing; polarition condensate; quantum physics
Release Date:2019/09/02
EU-Project number / Contract (GA) number:640012
OpenAIRE:OpenAIRE
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International