Topological Modes in a Laser Cavity through Exceptional State Transfer
| Autor: | A. Schumer, Y. G. N. Liu, J. Leshin, L. Ding, Y. Alahmadi, A. U. Hassan, H. Nasari, S. Rotter, D. N. Christodoulides, P. LiKamWa, M. Khajavikhan |
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| Rok vydání: | 2022 |
| Předmět: | |
| DOI: | 10.48550/arxiv.2203.08281 |
| Popis: | 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 Comment: A supplemental file is available on the Journal's website |
| Databáze: | OpenAIRE |
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