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Topological Modes in a Laser Cavity through Exceptional State Transfer by Schumer, A.; Liu, Y. G. N.; Leshin, J.; Ding, L.; Alahmadi, Y.; Hassan, A. U.; Nasari, H.; Rotter, S.; Christodoulides, D. N.; LiKamWa, P.; Khajavikhan, M. is a scholarly article available to read on EtoBox.

What is Topological Modes in a Laser Cavity through Exceptional State Transfer about?

Shaping the light emission characteristics of laser systems is of great importance in various areas of science and technology. In a typical lasing arrangement, the spatial profile of the mode tends to remain self-similar throughout the cavity. Here, we introduce a paradigm shift where a spatially evolving mode is faithfully settled into a pair of bi-orthogonal states at the two facets of a laser cavity. This is achieved by deliberately eliminating non-adiabatic jumps in a purposely designed structure that features a dynamic encirclement of a non-Hermitian exceptional point. The resulting state transfer reflects the unique topology of the associated Riemann surfaces. Our approach provides a route to develop versatile mode selective active

Author

Schumer, A.; Liu, Y. G. N.; Leshin, J.; Ding, L.; Alahmadi, Y.; Hassan, A. U.; Nasari, H.; Rotter, S.; Christodoulides, D. N.; LiKamWa, P.; Khajavikhan, M.

Published

2022

Language

EN