conference paper
Bimodal Directional Laser
Lei Dinga b, Alexander Schumerb c, Jason Leshina, Yousef Alahmadia, Absar U. Hassana, G. López-Galmichea, Patrick LiKamWaa, Stefan Rotterc, Demetrios N. Christodoulidesa, Mercedeh Khajavikhana b✉
- aCREOL, The College of Optics and Photonics, University of Central Florida, Orlando, FL 32816, USA
- bMing Hsieh Department of Electrical and Computer Engineering, University of Southern California, Los Angeles, CA 90089, USA
- cInstitute of Theoretical Physics, Vienna University of Technology (TU Wien), 1040, Vienna, Austria, EU
- ✉Corresponding author
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Abstract
We demonstrate dynamical encirclement of an exceptional point in a laser cavity. By continuously varying the detuning and coupling between a pair of PT-symmetric waveguides, the mode morphs into a different eigenmode as it emerges from opposing facets.

