- search hit 1 of 1
High-energy side-peak emission of exciton-polariton condensates in high density regime
Please always quote using this URN: urn:nbn:de:bvb:20-opus-167711
- In a standard semiconductor laser, electrons and holes recombine via stimulated emission to emit coherent light, in a process that is far from thermal equilibrium. Exciton-polariton condensates–sharing the same basic device structure as a semiconductor laser, consisting of quantum wells coupled to a microcavity–have been investigated primarily at densities far below the Mott density for signatures of Bose-Einstein condensation. At high densities approaching the Mott density, exciton-polariton condensates are generally thought to revert to aIn a standard semiconductor laser, electrons and holes recombine via stimulated emission to emit coherent light, in a process that is far from thermal equilibrium. Exciton-polariton condensates–sharing the same basic device structure as a semiconductor laser, consisting of quantum wells coupled to a microcavity–have been investigated primarily at densities far below the Mott density for signatures of Bose-Einstein condensation. At high densities approaching the Mott density, exciton-polariton condensates are generally thought to revert to a standard semiconductor laser, with the loss of strong coupling. Here, we report the observation of a photoluminescence sideband at high densities that cannot be accounted for by conventional semiconductor lasing. This also differs from an upper-polariton peak by the observation of the excitation power dependence in the peak-energy separation. Our interpretation as a persistent coherent electron-hole-photon coupling captures several features of this sideband, although a complete understanding of the experimental data is lacking. A full understanding of the observations should lead to a development in non-equilibrium many-body physics.…
Author: | Tomoyuki Horikiri, Makoto Yamaguchi, Kenji Kamide, Yasuhiro Matsuo, Tim Byrnes, Natsuko Ishida, Andreas Löffler, Sven Höfling, Yutaka Shikano, Tetsuo Ogawa, Alfred Forchel, Yoshihisa Yamamoto |
---|---|
URN: | urn:nbn:de:bvb:20-opus-167711 |
Document Type: | Journal article |
Faculties: | Fakultät für Physik und Astronomie / Physikalisches Institut |
Language: | English |
Parent Title (English): | Scientific Reports |
Year of Completion: | 2016 |
Volume: | 6 |
Issue: | 25655 |
Source: | Scientific Reports 6:25655 (2016). DOI: 10.1038/srep25655 |
DOI: | https://doi.org/10.1038/srep25655 |
Dewey Decimal Classification: | 5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik |
Tag: | exciton-polariton condensates; side-peak emission; standard semiconductor laser |
Release Date: | 2019/08/28 |
Licence (German): | CC BY: Creative-Commons-Lizenz: Namensnennung 4.0 International |