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복잡계 이론물리 연구단
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Edge mode bifurcations of two-dimensional topological lasers

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Title
Edge mode bifurcations of two-dimensional topological lasers
Author(s)
Sinan Gündoğdu; Juzar Thingna; Daniel Leykam
Publication Date
2020-07
Journal
OPTICS LETTERS, v.45, no.13, pp.3673 - 3676
Publisher
OPTICAL SOC AMER
Abstract
© 2020 Optical Society of America. Topological lasers are of growing interest as a way to achieve disorder-robust single-mode lasing using arrays of coupled resonators. We study lasing in a two-dimensional coupled resonator lattice exhibiting transitions between trivial and topological phases, which allows us to systematically characterize the lasing modes throughout a topological phase. We show that, unlike conventional topological robustness that requires a sufficiently large bulk band gap, bifurcations in topological edge mode lasing can occur even when the band gap is maximized.We show that linear mode bifurcations from single-mode to multi-mode lasing can occur deep within the topological phase, sensitive to both the pump shape and lattice geometry. We suggest ways to suppress these bifurcations and preserve single-edge mode lasing
URI
https://pr.ibs.re.kr/handle/8788114/7774
DOI
10.1364/OL.397778
ISSN
0146-9592
Appears in Collections:
Center for Theoretical Physics of Complex Systems(복잡계 이론물리 연구단) > 1. Journal Papers (저널논문)
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