Tuning the shape of semiconductor microstadium laser

Details Tuning the shape of semiconductor microstadium laser Tuning the shape of semiconductor microstadium laser

2007-05-07

arxiv.org/abs/0705.0864v1

Physics

Optics

Scientific paper

We presented a detailed experimental study on lasing in GaAs microstadium with various shapes. Unlike most deformed microcavities, the lasing threshold varies non-monotonically with the major-to-minor-axis ratio of the stadium. Under spatially uniform optical pumping, the first lasing mode corresponds to a high-quality scar mode consisting of several unstable periodic orbits. By tuning the shape of GaAs stadium, we are able to minimize the lasing threshold. This work demonstrates the possibility of controlling chaotic microcavity laser.

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