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INJECTION CURRENT MODULATED PARITY-TIME SYMMETRY IN COUPLED SEMICONDUCTOR LASERS

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posted on 06.08.2021, 13:56 by Luke J ThomasLuke J Thomas
This research investigates the characteristics of Parity Time symmetry breaking in two optically coupled, time delayed semiconductor lasers. A theoretical model is used to describe the controllable parameters in the experiment and intensity output of the coupled lasers. The PT parameters we control are the spatial separation between the two lasers, the frequency detuning, and the coupling strength. We find that the experimental data agrees with the predictions from the theoretical model confirming the intensity behaviors of the lasers, and the monotonic change in PT-threshold as a function of coupling scaled by the time delay.

History

Degree Type

Master of Science

Department

Physics and Astronomy

Campus location

Indianapolis

Advisor/Supervisor/Committee Chair

Gautam Vemuri

Additional Committee Member 2

Andrew Gavrin

Additional Committee Member 3

Horia Petrache

Additional Committee Member 4

Stephen Wassall

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