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1 August 2021 Exceptional points in anti-PT symmetric system of delay coupled semiconductor lasers
Gautam Vemuri, Andrew Wilkey, Yogesh Joglekar
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Proceedings Volume 11796, Active Photonic Platforms XIII; 1179613 (2021) https://doi.org/10.1117/12.2593311
Event: SPIE Nanoscience + Engineering, 2021, San Diego, California, United States
Abstract
This paper will report on some features of a platform for the realization of an anti parity-time (anti-PT) symmetric system in a pair of time-delay coupled semiconductor lasers, with special emphasis on the delay induced dynamics in the system. The system is modeled by a modified Lang-Kobayashi rate equations model, augmented to include delayed coupling. The role of a phase accumulation factor that arises from the delayed coupling is elucidated. Finally, the novel exceptional point(s) behavior that is characteristic of the time-delay is investigated via numerics as well as analytically via the Lambert W function.
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Gautam Vemuri, Andrew Wilkey, and Yogesh Joglekar "Exceptional points in anti-PT symmetric system of delay coupled semiconductor lasers", Proc. SPIE 11796, Active Photonic Platforms XIII, 1179613 (1 August 2021); https://doi.org/10.1117/12.2593311
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KEYWORDS
Semiconductor lasers
Sensors
Laser systems engineering
Numerical simulations
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