%0 Journal Article %T Analysis of low-threshold optically pumped III-nitride microdisk lasers %+ Centre de Nanosciences et de Nanotechnologies (C2N) %+ Laboratoire Charles Coulomb (L2C) %+ Centre de recherche sur l'hétéroepitaxie et ses applications (CRHEA) %+ Nanophysique et Semiconducteurs (NPSC) %A Tabataba-Vakili, Farsane %A Brimont, Christelle %A Alloing, Blandine %A Damilano, Benjamin %A Doyennette, Laetitia %A Guillet, Thierry %A Kurdi, Moustafa, El %A Chenot, Sébastien %A Brändli, Virginie %A Frayssinet, Eric %A Duboz, Jean-Yves %A Semond, Fabrice %A Gayral, Bruno %A Boucaud, Philippe %< avec comité de lecture %@ 0003-6951 %J Applied Physics Letters %I American Institute of Physics %V 117 %P 121103 %8 2020-09-22 %D 2020 %R 10.1063/5.0015252 %Z Physics [physics]/Condensed Matter [cond-mat]/Other [cond-mat.other] %Z Physics [physics]/Physics [physics]/Optics [physics.optics]Journal articles %X Low-threshold lasing under pulsed optical pumping is demonstrated at room temperature for III-nitride microdisks with InGaN/GaN quantum wells on Si in the blue spectral range. Thresholds in the range of 18 kW/cm 2 have been achieved along with narrow linewidths of 0.07 nm and a large peak to background dynamic of 300. We compare this threshold range with the one that can be calculated using a rate equation model. We show that thresholds in the few kW/cm 2 range constitute the best that can be achieved with III-nitride quantum wells at room temperature. The sensitivity of lasing on the fabrication process is also discussed. %G English %2 https://hal.science/hal-02946015/document %2 https://hal.science/hal-02946015/file/md_paper.pdf %L hal-02946015 %U https://hal.science/hal-02946015 %~ CEA %~ UNICE %~ UGA %~ CNRS %~ INPG %~ L2C %~ CEA-UPSAY %~ UNIV-PARIS-SACLAY %~ MIPS %~ UNIV-MONTPELLIER %~ UNIV-COTEDAZUR %~ IRIG %~ CEA-GRE %~ TEST-HALCNRS %~ UNIVERSITE-PARIS-SACLAY %~ UGA-EPE %~ ANR %~ PHELIQS %~ GS-ENGINEERING %~ GS-PHYSIQUE %~ INSTITUT-SCIENCES-LUMIERE %~ CRHEA %~ UM-2015-2021 %~ C2N %~ RENATECH