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Multimode Collective Atomic Recoil Lasing in Free Space

Dipartimento di Fisica “Aldo Pontremoli”, Università degli Studi di Milano, Via Celoria 16, I-20133 Milano, Italy
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Received: 10 November 2020 / Revised: 4 December 2020 / Accepted: 8 December 2020 / Published: 10 December 2020
(This article belongs to the Special Issue Collective Atomic and Free-Electron Lasing)
Cold atomic clouds in collective atomic recoil lasing are usually confined by an optical cavity, which forces the light-scattering to befall in the mode fixed by the resonator. Here we consider the system to be in free space, which leads into a vacuum multimode collective scattering. We show that the presence of an optical cavity is not always necessary to achieve coherent collective emission by the atomic ensemble and that a preferred scattering path arises along the major axis of the atomic cloud. We derive a full vectorial model for multimode collective atomic recoil lasing in free space. Such a model consists of multi-particle equations capable of describing the motion of each atom in a 2D/3D cloud. These equations are numerically solved by means of molecular dynamic algorithms, usually employed in other scientific fields. The numerical results show that both atomic density and collective scattering patterns are applicable to the cloud’s orientation and shape and to the polarization of the incident light. View Full-Text
Keywords: collective scattering; cold atoms; superradiance collective scattering; cold atoms; superradiance
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MDPI and ACS Style

Gisbert, A.T.; Piovella, N. Multimode Collective Atomic Recoil Lasing in Free Space. Atoms 2020, 8, 93. https://0-doi-org.brum.beds.ac.uk/10.3390/atoms8040093

AMA Style

Gisbert AT, Piovella N. Multimode Collective Atomic Recoil Lasing in Free Space. Atoms. 2020; 8(4):93. https://0-doi-org.brum.beds.ac.uk/10.3390/atoms8040093

Chicago/Turabian Style

Gisbert, Angel T.; Piovella, Nicola. 2020. "Multimode Collective Atomic Recoil Lasing in Free Space" Atoms 8, no. 4: 93. https://0-doi-org.brum.beds.ac.uk/10.3390/atoms8040093

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