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Journal Articles Applied Physics Letters Year : 2020

Analysis of low-threshold optically pumped III-nitride microdisk lasers

Christelle Brimont
Thierry Guillet
Bruno Gayral

Abstract

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.
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Dates and versions

hal-02946015 , version 1 (22-09-2020)

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Farsane Tabataba-Vakili, Christelle Brimont, Blandine Alloing, Benjamin Damilano, Laetitia Doyennette, et al.. Analysis of low-threshold optically pumped III-nitride microdisk lasers. Applied Physics Letters, 2020, 117, pp.121103. ⟨10.1063/5.0015252⟩. ⟨hal-02946015⟩
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