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Conferences > EQEC > 2023 > ef_8 > ef_8_2
  • Conference on Lasers and Electro-Optics/Europe (CLEO/Europe 2023) and European Quantum Electronics Conference (EQEC 2023)
  • Technical Digest Series (Optica Publishing Group, 2023),
  • paper ef_8_2

Tracking Exceptional Point above Laser Threshold

Kaiwen Ji, Qi Zhang, Li Ge, Gregoire Beaudoin, Isabelle Sagnes, Fabrice Raineri, Ramy El-Ganainy, and Alejandro M. Yacomotti

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Abstract

Exceptional points (EPs) are spectral singularities at which two or more eigenvalues of a non-Hermitian operator, together with their corresponding eigenvectors, coalesce. Recent studies on the EPs have revealed many intriguing phenomena, such as unidirectional visibility and laser self-termination [1,2]. However, EPs were accessible below the laser threshold in the aforementioned works, namely, the system is inherently linear.

© 2023 IEEE

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