Photonics Research, 2017, 5 (6): 060000B1, Published Online: Aug. 15, 2017
Unidirectional lasing in semiconductor microring lasers at an exceptional point [Invited] Download: 834次
Abstract
Recent experiments demonstrated that chiral symmetry breaking at an exceptional point (EP) is a viable route to achieve unidirectional laser emission in microring lasers. By a detailed semiconductor laser rate equation model, we show here that unidirectional laser emission at an EP is a robust regime. Slight deviations from the EP condition can break preferential unidirectional lasing near threshold via a Hopf instability. However, above a “second” laser threshold, unidirectional emission is restored.
Stefano Longhi, Liang Feng. Unidirectional lasing in semiconductor microring lasers at an exceptional point [Invited][J]. Photonics Research, 2017, 5(6): 060000B1.