公开(公告)号：US10531554B2

公开(公告)日：2020-01-07

申请号：US16290521

申请日：2019-03-01

Applicant: Utah State University Research Foundation

Inventor： Eric Imhof

IPC: H05H3/00 ,  H05H3/04 ,  H05H3/02 ,  G02B27/42 ,  G21K1/00

Abstract: A three-dimensional magneto-optical trap (3D GMOT) configured to trap a cold-atom cloud is disclosed. The 3D GMOT includes a single input light beam having its direction along a first axis, an area along a second and third axis that are both normal to the first axis, and a substantially flat input light beam intensity profile extending across its area. The 3D GMOT may also include a circular, diffraction-grating surface positioned normal to the first axis and having closely adjacent grooves arranged concentrically around a gap formed in its center. The circular, diffraction-grating surface is configured to diffract first-order light beams that intersect within an intersection region that lies directly above the gap and suppresses reflections and diffractions of all other orders. The 3D GMOT may further include a quadrupole magnetic field with its magnitude being zero within the intersection region.

公开(公告)号：US20170359888A1

公开(公告)日：2017-12-14

申请号：US15431492

申请日：2017-02-13

Applicant: Utah State University Research Foundation

Inventor： Eric Imhof

IPC: H05H3/04 ,  G02B27/42 ,  H05H3/02

CPC classification number: H05H3/04 ,  G02B27/4233 ,  H05H3/02

Abstract: A two-dimensional magneto-optical trap (2D GMOT) that is configured to produce a cold-atom beam exiting the 2D GMOT is disclosed. In embodiments, the 2D GMOT is configured to feed a three-dimensional GMOT with the cold atom beam. In embodiments, the 2D GMOT includes an input light beam having its direction along a first axis, its width along a second axis, normal to the first axis, and a substantially flat input light beam intensity profile. 2D GMOT may further includes a quadrupole magnetic field with its magnitude being zero along a third axis that is centered at the center of the input light beam's width. The 2D GMOT may also include a diffraction-grating surface positioned normal to the first axis, composed of closely adjacent parallel grooves spread across the width and run parallel to the third axis.

公开(公告)号：US20190200445A1

公开(公告)日：2019-06-27

申请号：US16290521

申请日：2019-03-01

Applicant: Utah State University Research Foundation

Inventor： Eric Imhof

IPC: H05H3/04 ,  G02B27/42 ,  G21K1/00 ,  H05H3/02

CPC classification number: H05H3/04 ,  G02B27/4233 ,  G21K1/006 ,  H05H3/02

Abstract: A three-dimensional magneto-optical trap (3D GMOT) configured to trap a cold-atom cloud is disclosed. The 3D GMOT includes a single input light beam having its direction along a first axis, an area along a second and third axis that are both normal to the first axis, and a substantially flat input light beam intensity profile extending across its area. The 3D GMOT may also include a circular, diffraction-grating surface positioned normal to the first axis and having closely adjacent grooves arranged concentrically around a gap formed in its center. The circular, diffraction-grating surface is configured to diffract first-order light beams that intersect within an intersection region that lies directly above the gap and suppresses reflections and diffractions of all other orders. The 3D GMOT may further include a quadrupole magnetic field with its magnitude being zero within the intersection region.

公开(公告)号：US10278275B2

公开(公告)日：2019-04-30

申请号：US15431492

申请日：2017-02-13

Applicant: Utah State University Research Foundation

Inventor： Eric Imhof

IPC: G21K1/00 ,  H05H3/04 ,  H05H3/02 ,  G02B27/42

Abstract: A two-dimensional magneto-optical trap (2D GMOT) that is configured to produce a cold-atom beam exiting the 2D GMOT is disclosed. In embodiments, the 2D GMOT is configured to feed a three-dimensional GMOT with the cold atom beam. In embodiments, the 2D GMOT includes an input light beam having its direction along a first axis, its width along a second axis, normal to the first axis, and a substantially flat input light beam intensity profile. 2D GMOT may further includes a quadrupole magnetic field with its magnitude being zero along a third axis that is centered at the center of the input light beam's width. The 2D GMOT may also include a diffraction-grating surface positioned normal to the first axis, composed of closely adjacent parallel grooves spread across the width and run parallel to the third axis.