Spatiotemporal lasing dynamics in a Limacon-shaped microcavity

Limacon-shaped microdisk lasers are promising on-chip light sources with low lasing threshold and unidirectional output. We conduct an experimental study on the lasing dynamics of Limacon-shaped semiconductor microcavities. The edge emission exhibits intensity fluctuations over a wide range of spatial and temporal scales. They result from mul-tiple dynamic processes with different origins and occur on different spatiotemporal scales. The dominant process is an alternate oscillation between two output beams with a period as short as a few nanoseconds.(c) 2023 Optica Publishing Group

Automated summary

Limacon-shaped microdisk lasers are promising on-chip light sources with low threshold and unidirectional output. We conducted an experimental study on the lasing dynamics of Limacon-shaped semiconductor microcavities. The edge emission exhibits intensity fluctuations over a wide range of spatial and temporal scales, resulting from multiple dynamic processes with different origins and occurring on different spatiotemporal scales. The dominant process is an alternate oscillation between two output beams with a period as short as a few nanoseconds.