Document Type
Article
Publication Date
3-7-2018
Abstract
Topological physics provides a robust framework for strategically controlling wave confinement and propagation dynamics. However, current implementations have been restricted to the limited design parameter space defined by passive topological structures. Active systems provide a more general framework where different fundamental symmetry paradigms, such as those arising from non-Hermiticity and nonlinear interaction, can generate a new landscape for topological physics and its applications. Here, we bridge this gap and present an experimental investigation of an active topological photonic system, demonstrating a topological hybrid silicon microlaser array respecting the charge-conjugation symmetry. The created new symmetry features favour the lasing of a protected zero mode, where robust single-mode laser action in the desired state prevails even with intentionally introduced perturbations. The demonstrated microlaser is hybrid implemented on a silicon-on-insulator substrate, and is thereby readily suitable for integrated silicon photonics with applications in optical communication and computing.
Publication Title
Nature Communications
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 International License.
Recommended Citation
Zhao, H.,
Mao, P.,
Teimourpour, M. H.,
Malzard, S.,
El-Ganainy, R.,
Schomerus, H.,
&
Feng, L.
(2018).
Topological hybrid silicon microlasers.
Nature Communications,
9.
http://doi.org/10.1038/s41467-018-03434-2
Retrieved from: https://digitalcommons.mtu.edu/physics-fp/98
Version
Publisher's PDF
Publisher's Statement
© The Author(s) 2018. Article deposited here in compliance with publisher policies. Publisher's version of record: https:dx.doi.org/10.1038/s41467-018-03434-2