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1 March 2019 the relations between white light cavities and exceptional points in PT-symmetric systems
Jacob Scheuer
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Proceedings Volume 10934, Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology; 109340U (2019) https://doi.org/10.1117/12.2515411
Event: SPIE OPTO, 2019, San Francisco, California, United States
Abstract
We consider a PT-symmetric laser system comprising active and passive (lossy) coupled micro-resonators. It is shown that at its exceptional point (EP), the system satisfies the white light cavity (WLC) condition, exhibiting zero group index Slightly above lasing threshold, in the broken symmetry regime near the EP, the system exhibits “superluminal” lasing. It is also shown that some of the latest experimental studies involving PTSSs have indirectly demonstrated such superluminal lasing.
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Jacob Scheuer "the relations between white light cavities and exceptional points in PT-symmetric systems", Proc. SPIE 10934, Optical, Opto-Atomic, and Entanglement-Enhanced Precision Metrology, 109340U (1 March 2019); https://doi.org/10.1117/12.2515411
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KEYWORDS
Resonators
Phase shifts
Sensors
Absorption
Interferometry
LIGO
Lasers
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