Browsing by Subject "Semiconductor lasers"

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    Exceptional points in anti-PT symmetric system of delay coupled semiconductor lasers
    (SPIE, 2021-08) Vemuri, Gautam; Wilkey, Andrew; Joglekar, Yogesh; Physics, School of Science
    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.