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Creators/Authors contains: "Khajavikhan, M."

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  1. A laser cavity is designed with a spatial mode that exploits the topology surrounding an exceptional point.
  2. A new scheme for ultrasensitive micro-ring laser gyroscopes based on the physics of exceptional points is proposed. In such systems, the sensitivity to low rotation rates can be enhanced by several orders of magnitude.
  3. We report the first observation of complex lasing transitions in a topological 1D Su-Schrieffer-Heeger active array. The effect of gain saturation nonlinearities and carrier dynamics on the edge-state is investigated both theoretically and experimentally.
  4. We report the first observation of Aharonov-Bohm-like topological suppression of optical tunneling in twisted multicore fibers. Experimental results show that this effect is insensitive to imperfections, nonlinearities and mode-mixing processes, in agreement with theoretical predictions.