- AutorIn
- Tom Michalsky
- Marcel Wille
- Christof P. Dietrich
- Robert Röder
- Carsten Ronning
- Rüdiger Schmidt-Grund
- Marius Grundmann
- Titel
- Phonon-assisted lasing in ZnO microwires at room temperature
- Zitierfähige Url:
- https://nbn-resolving.org/urn:nbn:de:bsz:15-qucosa2-312115
- Quellenangabe
- Applied Physics Letters Erscheinungsort: Melville
Verlag: American Institute of Physics
Erscheinungsjahr: 2014
Jahrgang: 105
Heft: 21
ISSN: 0003-6951
E-ISSN: 1077-3118
Artikelnummer: 211106 - Erstveröffentlichung
- 2014
- Abstract (EN)
- We report on room temperature phonon-assisted whispering gallery mode (WGM) lasing in ZnO microwires. For WGM laser action on the basis of the low gain phonon scattering process high quality resonators with sharp corners and smooth facets are prerequisite. Above the excitation threshold power PTh of typically 100 kW/cm2, the recombination of free excitons under emission of two longitudinal optical phonons provides sufficient gain to overcome all losses in the microresonator and to result in laser oscillation. This threshold behavior is accompanied by a distinct change of the far and near field emission patterns, revealing the WGM related nature of the lasing modes. The spectral evolution as well as the characteristic behavior of the integrated photoluminescence intensity versus the excitation power unambiguously proves laser operation. Polarization-resolved measurements show that the laser emission is linear polarized perpendicular to the microwire axis (TE).
- Andere Ausgabe
- Link zur Originalpublikation in Applied Physics Letters
Link: http://dx.doi.org/10.1063/1.4902898 - Freie Schlagwörter (EN)
- Polarization, Visible spectra, Photoluminescence, Excitons
- Klassifikation (DDC)
- 530
- Verlag
- American Institute of Physics, Melville
- Publizierende Institution
- Universität Leipzig, Leipzig
- Sonstige beteiligte Institution
- Universität Jena, Jena
- Version / Begutachtungsstatus
- publizierte Version / Verlagsversion
- URN Qucosa
- urn:nbn:de:bsz:15-qucosa2-312115
- Veröffentlichungsdatum Qucosa
- 11.08.2018
- Dokumenttyp
- Artikel
- Sprache des Dokumentes
- Englisch