Formation dynamics of exciton-polariton vortices created by nonresonant annular pumping

Bernd Berger; Daniel Schmidt; Xuekai Ma; Stefan Schumacher; Christian Schneider; Sven Höfling; Marc  Aßmann

doi:10.1103/PhysRevB.101.245309

Formation dynamics of exciton-polariton vortices created by nonresonant annular pumping

Bernd Berger, Daniel Schmidt, Xuekai Ma, Stefan Schumacher, Christian Schneider, Sven Höfling, Marc Aßmann

Research output: Contribution to journal › Article › peer-review

Abstract

We study the spontaneous formation of exciton polariton vortices in an all-optical non-resonantly excited annular trap, which is formed by ring-shaped subpicosecond laser pulses. Since the light emitted by these vortices carries orbital angular momentum (OAM) corresponding to their topological charge, we apply a dedicated OAM spectroscopy technique to detect the OAM of the measurement signal with picosecond time resolution. This allows us to identify the formation of OAM modes and investigate the dynamics of the vortex formation process. We also study the power dependence of this process and how the ring diameter influences the formation of OAM modes.

Original language	English
Article number	245309
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	101
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.101.245309
Publication status	Published - 24 Jun 2020

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10.1103/PhysRevB.101.245309

Berger_2020_PRB_Formation_AAM
Copyright © 2020 American Physical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1103/PhysRevB.101.245309
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Cite this

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title = "Formation dynamics of exciton-polariton vortices created by nonresonant annular pumping",

abstract = "We study the spontaneous formation of exciton polariton vortices in an all-optical non-resonantly excited annular trap, which is formed by ring-shaped subpicosecond laser pulses. Since the light emitted by these vortices carries orbital angular momentum (OAM) corresponding to their topological charge, we apply a dedicated OAM spectroscopy technique to detect the OAM of the measurement signal with picosecond time resolution. This allows us to identify the formation of OAM modes and investigate the dynamics of the vortex formation process. We also study the power dependence of this process and how the ring diameter influences the formation of OAM modes.",

author = "Bernd Berger and Daniel Schmidt and Xuekai Ma and Stefan Schumacher and Christian Schneider and Sven H{\"o}fling and Marc A{\ss}mann",

note = "The authors acknowledge financial support by the Deutsche Forschungsgemeinschaft (DFG) through the international collaborative research center TRR142 (grant No. 231447078, project A04) and Heisenberg program (grant No. 270619725) and by the Paderborn Center for Parallel Computing. X.M. further acknowledges support from the NSFC (No. 11804064). The Wurzburg group acknowledges support by the state of Bavaria.",

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doi = "10.1103/PhysRevB.101.245309",

language = "English",

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T1 - Formation dynamics of exciton-polariton vortices created by nonresonant annular pumping

AU - Berger, Bernd

AU - Schmidt, Daniel

AU - Ma, Xuekai

AU - Schumacher, Stefan

AU - Schneider, Christian

AU - Höfling, Sven

AU - Aßmann, Marc

N1 - The authors acknowledge financial support by the Deutsche Forschungsgemeinschaft (DFG) through the international collaborative research center TRR142 (grant No. 231447078, project A04) and Heisenberg program (grant No. 270619725) and by the Paderborn Center for Parallel Computing. X.M. further acknowledges support from the NSFC (No. 11804064). The Wurzburg group acknowledges support by the state of Bavaria.

PY - 2020/6/24

Y1 - 2020/6/24

N2 - We study the spontaneous formation of exciton polariton vortices in an all-optical non-resonantly excited annular trap, which is formed by ring-shaped subpicosecond laser pulses. Since the light emitted by these vortices carries orbital angular momentum (OAM) corresponding to their topological charge, we apply a dedicated OAM spectroscopy technique to detect the OAM of the measurement signal with picosecond time resolution. This allows us to identify the formation of OAM modes and investigate the dynamics of the vortex formation process. We also study the power dependence of this process and how the ring diameter influences the formation of OAM modes.

AB - We study the spontaneous formation of exciton polariton vortices in an all-optical non-resonantly excited annular trap, which is formed by ring-shaped subpicosecond laser pulses. Since the light emitted by these vortices carries orbital angular momentum (OAM) corresponding to their topological charge, we apply a dedicated OAM spectroscopy technique to detect the OAM of the measurement signal with picosecond time resolution. This allows us to identify the formation of OAM modes and investigate the dynamics of the vortex formation process. We also study the power dependence of this process and how the ring diameter influences the formation of OAM modes.

UR - https://www.scopus.com/pages/publications/85087927674

U2 - 10.1103/PhysRevB.101.245309

DO - 10.1103/PhysRevB.101.245309

M3 - Article

SN - 1098-0121

VL - 101

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 24

M1 - 245309

ER -

Formation dynamics of exciton-polariton vortices created by nonresonant annular pumping

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