With his co-workers, Michael has studied different mode families that exist in two semiconductor microdisk lasers that are mutually coupled by a conjunction between the laser cavities. The work contains both experiments and theoretical studies, confirming the generation of whispering gallery modes that exist only under simultaneous pumping conditions. These modes are attributed to the collective mode family, which can lead to a single mode operation.
The paper was published in AIP Journal of Applied Physics: Journal of Applied Physics 127, 173105 (2020); https://doi.org/10.1063/5.0004273