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Lasing With Resonant Feedback in Weakly Modulated Parity-Time Symmetric Lattices (2018)

Institute of Electrical and Electronics Engineers (IEEE)

In: IEEE Photonics Journal (J-PHTNCS)

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Publication Date: 2018-04-04

Description: We report on the lasing action in weakly modulated parity-time (PT) symmetric lattices. At the exceptional point in PT-symmetric lattices, the amplitude and phase of unidirectionally scattered waves are independently and flexibly determined by the PT modulations, thus, providing a distinctive route to construct a lasing mode in finite systems with weakly modulated structures. It is revealed that the resonant feedback mechanism plays a crucial role in building up the lasing action. Our finding would enrich the singularity dynamics in the weakly modulated PT systems.

Electronic ISSN: 1943-0655

Topics: Electrical Engineering, Measurement and Control Technology , Physics

Published by Institute of Electrical and Electronics Engineers (IEEE)

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