Parity-time-symmetric photonic and optoelectronic systems are being intensively explored recently, which has been bringing about significant fundamental physics and technological outcomes. One of the main characteristics of a PT symmetric system is its effectiveness in mode selection in single-mode lasing, in which two cross-coupled and spatially separated resonators with identical geometries are usually employed. A PT-symmetric laser system has a strongly enhanced gain difference between the do...
Parity-time-symmetric photonic and optoelectronic systems are being intensively explored recently, which has been bringing about significant fundamental physics and technological outcomes. One of the main characteristics of a PT symmetric system is its effectiveness in mode selection in single-mode lasing, in which two cross-coupled and spatially separated resonators with identical geometries are usually employed. A PT-symmetric laser system has a strongly enhanced gain difference between the do...
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