Analysis of low-threshold optically pumped III-nitride microdisk lasers
- Resource Type
- Working Paper
- Authors
- Tabataba-Vakili, Farsane; Brimont, Christelle; Alloing, Blandine; Damilano, Benjamin; Doyennette, Laetitia; Guillet, Thierry; Kurdi, Moustafa El; Chenot, Sébastien; Brändli, Virginie; Frayssinet, Eric; Duboz, Jean-Yves; Semond, Fabrice; Gayral, Bruno; Boucaud, Philippe
- Source
- Appl. Phys. Lett. 117, 121103 (2020)
- Subject
- Physics - Applied Physics
- Language
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/cm2 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/cm2 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.