Loss-Driven Topological Transitions in Lasing

Grazia Salerno; Rebecca Heilmann; Kristian Arjas; Kerttu Aronen; Jani Petri Martikainen; Päivi Törmä

doi:10.1103/PhysRevLett.129.173901

Loss-Driven Topological Transitions in Lasing

Grazia Salerno, Rebecca Heilmann, Kristian Arjas, Kerttu Aronen, Jani Petri Martikainen, Päivi Törmä

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Abstract

We experimentally observe lasing in a hexamer plasmonic lattice and find that, when tuning the scale of the unit cell, the polarization properties of the emission change. By a theoretical analysis, we identify the lasing modes as quasi-bound-states in continuum of topological charges of zero, one, or two. A T-matrix simulation of the structure reveals that the mode quality (Q) factors depend on the scale of the unit cell, with highest-Q modes favored by lasing. The system thus shows a loss-driven transition between lasing in modes of trivial and high-order topological charge.

Original language	English
Article number	173901
Pages (from-to)	1-6
Number of pages	6
Journal	Physical Review Letters
Volume	129
Issue number	17
DOIs	https://doi.org/10.1103/PhysRevLett.129.173901
Publication status	Published - 21 Oct 2022
MoE publication type	A1 Journal article-refereed

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10.1103/PhysRevLett.129.173901

Loss-Driven Topological Transitions in LasingFinal published version, 1.78 MB

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title = "Loss-Driven Topological Transitions in Lasing",

abstract = "We experimentally observe lasing in a hexamer plasmonic lattice and find that, when tuning the scale of the unit cell, the polarization properties of the emission change. By a theoretical analysis, we identify the lasing modes as quasi-bound-states in continuum of topological charges of zero, one, or two. A T-matrix simulation of the structure reveals that the mode quality (Q) factors depend on the scale of the unit cell, with highest-Q modes favored by lasing. The system thus shows a loss-driven transition between lasing in modes of trivial and high-order topological charge.",

author = "Grazia Salerno and Rebecca Heilmann and Kristian Arjas and Kerttu Aronen and Martikainen, {Jani Petri} and P{\"a}ivi T{\"o}rm{\"a}",

note = "Funding Information: We thank Javier Cuerda for useful discussions on the finite element method simulations. This work was supported by the Academy of Finland under Project No. 318937 (PROFI), the Academy of Finland Flagship Programme, Photonics Research and Innovation (PREIN), Project No. 320167, and by Centre for Quantum Engineering (CQE) at Aalto University. Part of the research was performed at the OtaNano Nanofab cleanroom (Micronova Nanofabrication Centre), supported by Aalto University. We acknowledge the computational resources provided by the Aalto Science-IT project. G. S. has received funding from the European Union{\textquoteright}s Horizon 2020 research and innovation program under the Marie Sk{\l}odowska-Curie Grant Agreement No. 101025211 (TEBLA). | openaire: EC/H2020/101025211/EU//TEBLA ",

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AU - Salerno, Grazia

AU - Heilmann, Rebecca

AU - Arjas, Kristian

AU - Aronen, Kerttu

AU - Martikainen, Jani Petri

AU - Törmä, Päivi

N1 - Funding Information: We thank Javier Cuerda for useful discussions on the finite element method simulations. This work was supported by the Academy of Finland under Project No. 318937 (PROFI), the Academy of Finland Flagship Programme, Photonics Research and Innovation (PREIN), Project No. 320167, and by Centre for Quantum Engineering (CQE) at Aalto University. Part of the research was performed at the OtaNano Nanofab cleanroom (Micronova Nanofabrication Centre), supported by Aalto University. We acknowledge the computational resources provided by the Aalto Science-IT project. G. S. has received funding from the European Union’s Horizon 2020 research and innovation program under the Marie Skłodowska-Curie Grant Agreement No. 101025211 (TEBLA). | openaire: EC/H2020/101025211/EU//TEBLA

PY - 2022/10/21

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N2 - We experimentally observe lasing in a hexamer plasmonic lattice and find that, when tuning the scale of the unit cell, the polarization properties of the emission change. By a theoretical analysis, we identify the lasing modes as quasi-bound-states in continuum of topological charges of zero, one, or two. A T-matrix simulation of the structure reveals that the mode quality (Q) factors depend on the scale of the unit cell, with highest-Q modes favored by lasing. The system thus shows a loss-driven transition between lasing in modes of trivial and high-order topological charge.

AB - We experimentally observe lasing in a hexamer plasmonic lattice and find that, when tuning the scale of the unit cell, the polarization properties of the emission change. By a theoretical analysis, we identify the lasing modes as quasi-bound-states in continuum of topological charges of zero, one, or two. A T-matrix simulation of the structure reveals that the mode quality (Q) factors depend on the scale of the unit cell, with highest-Q modes favored by lasing. The system thus shows a loss-driven transition between lasing in modes of trivial and high-order topological charge.

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Loss-Driven Topological Transitions in Lasing

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TEBLA: Topological Effects in Bosonic Lattices

PREIN: Photonics Research and Innovation

OtaNano

OtaNano - Nanofab

Science-IT

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Loss-Driven Topological Transitions in Lasing

Abstract

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TEBLA: Topological Effects in Bosonic Lattices

PREIN: Photonics Research and Innovation

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OtaNano

OtaNano - Nanofab

Science-IT

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