公开(公告)号：US12242141B2

公开(公告)日：2025-03-04

申请号：US18297886

申请日：2023-04-10

Applicant: Eric A. Imhof ,  Steven Ryan Jefferts ,  Vyacheslav Lebedev

Inventor： Eric A. Imhof ,  Steven Ryan Jefferts ,  Vyacheslav Lebedev

IPC: G04F5/14 ,  G02F1/01 ,  G05D25/02 ,  H03L7/26

Abstract: One example includes an atomic optical reference system. The system includes an optical system comprising a laser configured to generate an optical beam. The system also includes a vapor cell comprising alkali metal atoms that are stimulated in response to a modulated beam corresponding to an amplitude-modulated version of the optical beam. The system also includes a detection system configured to monitor at least one detection signal corresponding to light emitted from or absorbed by the vapor cell and to generate at least one feedback signal in response to the at least one detection signal. The system further includes a beam modulator configured to amplitude-modulate the optical beam to generate the modulated beam and to frequency shift the optical beam to generate an output beam having a stable frequency in response to the at least one feedback signal.

公开(公告)号：US20210270882A1

公开(公告)日：2021-09-02

申请号：US17005399

申请日：2020-08-28

Applicant: ERIC A. IMHOF ,  MICHAEL S. LARSEN

Inventor： ERIC A. IMHOF ,  MICHAEL S. LARSEN

IPC: G01R29/08

Abstract: One embodiment includes an electrometer system that includes a sensor cell and a probe laser to generate a probe beam directed through the sensor cell in a first direction and exiting the sensor cell as a detection beam. The system also includes a coupling laser to generate a coupling beam directed through the sensor cell collinearly and anti-parallel with the probe beam. The system also includes a reference signal generator configured to generate a reference signal having a predetermined polarization and a predetermined frequency through the sensor cell. The system further includes a detection system configured to monitor the detection beam to determine a frequency and a vector component of an external signal based on an intensity of the detection beam and based on the predetermined polarization and the predetermined frequency of the reference signal.

公开(公告)号：US20220196444A1

公开(公告)日：2022-06-23

申请号：US17552909

申请日：2021-12-16

Applicant: ERIC A. IMHOF ,  THOMAS G. SPENCE ,  STEVEN RYAN JEFFERTS ,  MICHAEL D. BULATOWICZ

Inventor： ERIC A. IMHOF ,  THOMAS G. SPENCE ,  STEVEN RYAN JEFFERTS ,  MICHAEL D. BULATOWICZ

IPC: G01D11/24 ,  G04F5/14

Abstract: One embodiment includes a vapor cell for an atomic physics-based sensor system. The vapor cell includes a cell wall formed from an approximately transparent material. The cell wall can enclose an alkali metal vapor and can include an inner surface and an outer surface. The vapor cell can also include at least one structural feature provided on at least one of the inner surface and the outer surface of the cell wall and extending along a portion of the respective at least one of the inner surface and the outer surface.

公开(公告)号：US11346877B2

公开(公告)日：2022-05-31

申请号：US17005399

申请日：2020-08-28

Applicant: Eric A. Imhof ,  Michael S. Larsen

Inventor： Eric A. Imhof ,  Michael S. Larsen

IPC: G01R29/08

Abstract: One embodiment includes an electrometer system that includes a sensor cell and a probe laser to generate a probe beam directed through the sensor cell in a first direction and exiting the sensor cell as a detection beam. The system also includes a coupling laser to generate a coupling beam directed through the sensor cell collinearly and anti-parallel with the probe beam. The system also includes a reference signal generator configured to generate a reference signal having a predetermined polarization and a predetermined frequency through the sensor cell. The system further includes a detection system configured to monitor the detection beam to determine a frequency and a vector component of an external signal based on an intensity of the detection beam and based on the predetermined polarization and the predetermined frequency of the reference signal.

公开(公告)号：US20240096513A1

公开(公告)日：2024-03-21

申请号：US17945775

申请日：2022-09-15

Applicant: DORA CHAVEZ ,  ERIC A. IMHOF ,  MICHAEL S. LARSEN

Inventor： DORA CHAVEZ ,  ERIC A. IMHOF ,  MICHAEL S. LARSEN

IPC: G21K1/00

CPC classification number: G21K1/006

Abstract: One example includes a MOT system. The system includes first optical source configured to provide a plurality of first optical beams parallel to a central axis associated with the MOT system, and a first set of optics configured to focus the first optical beams to the central axis through a trapping region comprising a vapor of atoms. The system also includes a second optical source configured to provide a plurality of second optical beams parallel to the central axis associated with the MOT system, and a second set of optics configured to focus the second optical beams to the central axis through the trapping region. Each of the second optical beams can be coaxial with a respective one of the first optical beams, such that each of the first optical beams is counterpropagating with a respective one of the second optical beams.

公开(公告)号：US20220196718A1

公开(公告)日：2022-06-23

申请号：US17552854

申请日：2021-12-16

Applicant: THAD G. WALKER ,  ERIC A. IMHOF ,  STEVEN RYAN JEFFERTS

Inventor： THAD G. WALKER ,  ERIC A. IMHOF ,  STEVEN RYAN JEFFERTS

IPC: G01R29/12

Abstract: One embodiment includes an electrometer system. The system includes a sensor cell comprising alkali metal atoms within, and an optical beam system configured to provide at least one optical beam through the sensor cell to provide a first Rydberg energy state of the alkali metal atoms, the at least one optical beam exiting the sensor cell as a detection beam. The system also includes a tuning signal generator configured to generate a tuning signal having a predetermined tuning frequency to adjust an energy difference between the first Rydberg energy state and a second Rydberg energy state of the alkali metal atoms. The system further includes a detection system configured to monitor the detection beam to detect an external signal having a frequency that is approximately equal to the energy difference between the first Rydberg energy state and the second Rydberg energy state based on monitoring the detection beam.

公开(公告)号：US12188784B2

公开(公告)日：2025-01-07

申请号：US17552909

申请日：2021-12-16

Applicant: Eric A. Imhof ,  Thomas G. Spence ,  Steven Ryan Jefferts ,  Michael D. Bulatowicz

Inventor： Eric A. Imhof ,  Thomas G. Spence ,  Steven Ryan Jefferts ,  Michael D. Bulatowicz

IPC: G01D11/24 ,  G04F5/14

Abstract: One embodiment includes a vapor cell for an atomic physics-based sensor system. The vapor cell includes a cell wall formed from an approximately transparent material. The cell wall can enclose an alkali metal vapor and can include an inner surface and an outer surface. The vapor cell can also include at least one structural feature provided on at least one of the inner surface and the outer surface of the cell wall and extending along a portion of the respective at least one of the inner surface and the outer surface.

公开(公告)号：US20230333415A1

公开(公告)日：2023-10-19

申请号：US18297886

申请日：2023-04-10

Applicant: ERIC A. IMHOF ,  STEVEN RYAN JEFFERTS ,  VYACHESLAV LEBEDEV

Inventor： ERIC A. IMHOF ,  STEVEN RYAN JEFFERTS ,  VYACHESLAV LEBEDEV

IPC: G02F1/01 ,  G05D25/02 ,  H03L7/26 ,  G04F5/14

CPC classification number: G02F1/0121 ,  G05D25/02 ,  H03L7/26 ,  G04F5/14 ,  G02F2201/58

Abstract: One example includes an atomic optical reference system. The system includes an optical system comprising a laser configured to generate an optical beam. The system also includes a vapor cell comprising alkali metal atoms that are stimulated in response to a modulated beam corresponding to an amplitude-modulated version of the optical beam. The system also includes a detection system configured to monitor at least one detection signal corresponding to light emitted from or absorbed by the vapor cell and to generate at least one feedback signal in response to the at least one detection signal. The system further includes a beam modulator configured to amplitude-modulate the optical beam to generate the modulated beam and to frequency shift the optical beam to generate an output beam having a stable frequency in response to the at least one feedback signal.

公开(公告)号：US20220196719A1

公开(公告)日：2022-06-23

申请号：US17552873

申请日：2021-12-16

Applicant: THAD G. WALKER ,  ERIC A. IMHOF ,  STEVEN RYAN JEFFERTS

Inventor： THAD G. WALKER ,  ERIC A. IMHOF ,  STEVEN RYAN JEFFERTS

IPC: G01R29/12

Abstract: One embodiment includes an electrometer system. The system includes a sensor cell comprising alkali metal atoms within, and a probe laser configured to generate a probe beam, the probe beam being provided through the sensor cell. The system also includes a coupling laser configured to generate a coupling beam. The coupling beam can be provided through the sensor cell to combine with the probe beam provided through the sensor cell to provide a Rydberg energy state of the alkali metal atoms, the probe beam exiting the sensor cell as a detection beam. The system further includes a sensor control system configured to monitor the detection beam to detect an external signal based on monitoring a phase of the detection beam.