公开(公告)号：US20230386695A1

公开(公告)日：2023-11-30

申请号：US18449142

申请日：2023-08-14

Applicant: University of Southampton

Inventor： Andrei-Aurel DRAGOMIR ,  Matthew David HIMSWORTH

IPC: G21K1/00 ,  G21K1/06

CPC classification number: G21K1/006 ,  G21K1/067

Abstract: An optical trap for laser cooling and trapping atoms. Three pairs of laser beams are directed to cross in a vacuum chamber at a common intersection volume, wherein each pair is formed by two counterpropagating beams. Rather than having a mutually orthogonal arrangement in which each beam pair forms an angle χ of 45° to a reference axis, z, these angles are instead between 5°≤χ≤40°. Moreover, in each beam pair, the counterpropagating beams are not precisely aligned in a common path, as in a conventional magneto-optical trap, but are slightly misaligned by respective misalignment angles [α, β, κ] of typically 0.1° to 2°. The misalignment angles and beam widths are however selected so that a common intersection volume for all six beams is maintained. This provides an all-optical trap in which laser cooling and trapping of atoms takes place without a magnetic field being present.

公开(公告)号：US20230274849A1

公开(公告)日：2023-08-31

申请号：US18248157

申请日：2021-10-28

Applicant: University of Southampton

Inventor： Andrei-Aurel DRAGOMIR ,  Matthew David HIMSWORTH

IPC: G21K1/00 ,  G21K1/06

CPC classification number: G21K1/006 ,  G21K1/067

Abstract: An optical trap for laser cooling and trapping atoms. Three pairs of laser beams are directed to cross in a vacuum chamber at a common intersection volume, wherein each pair is formed by two counterpropagating beams. Rather than having a mutually orthogonal arrangement in which each beam pair forms an angle χ of 45° to a reference axis, z, these angles are instead between 5°≤χ≤40°. Moreover, in each beam pair, the counterpropagating beams are not precisely aligned in a common path, as in a conventional magneto-optical trap, but are slightly misaligned by respective misalignement angles [α, β, κ] of typically 0.1° to 2°. The misalignment angles and beam widths are however selected so that a common intersection volume for all six beams is maintained This provides an all-optical trap in which laser cooling and trapping of atoms takes place without a magnetic field being present.