Measuring radio frequency electromagnetic waves with an in-line measurement device

    公开(公告)号:US12007425B1

    公开(公告)日:2024-06-11

    申请号:US18503071

    申请日:2023-11-06

    CPC classification number: G01R29/0885 G01R29/0814

    Abstract: In a general aspect, a system for measuring radio frequency (RF) electromagnetic waves includes a laser system configured to generate plurality of input optical signals. The system also includes an RF measurement device having first and second mode converters and an internal cavity therebetween. The internal cavity contains a vapor that is configured to produce an output optical signal based on the plurality of input optical signals. The RF measurement device also includes an RF waveguide that extends between the first and second mode converters and is configured to carry the second RF waveguide mode through the internal cavity. The system also includes an optical detector system configured to generate a detector signal in response to receiving the output optical signal. The system additionally includes a signal processing system configured to generate data in response to receiving the detector signal.

    Measuring radio frequency electromagnetic waves using Rydberg electrometry

    公开(公告)号:US12117474B1

    公开(公告)日:2024-10-15

    申请号:US18503062

    申请日:2023-11-06

    CPC classification number: G01R29/0885

    Abstract: In a general aspect, a radio frequency (RF) measurement device includes first and second mode converters, each configured to convert a mode of the RF electromagnetic wave between a first RF waveguide mode and a second RF waveguide mode. The RF measurement device also includes an internal cavity between the first and second mode converters that contains a vapor or a source of the vapor. The vapor includes Ryberg atoms or molecules. The RF measurement device additionally includes an RF waveguide extending between the first and second mode converters and configured to carry the second RF waveguide mode through the internal cavity. In some variations, the RF waveguide includes first and second longitudinal portions disposed on respective, opposite sides of the device and configured to establish a target RF profile in an interaction region of the internal cavity.

    Sensing Radio Frequency Electromagnetic Fields

    公开(公告)号:US20240393379A1

    公开(公告)日:2024-11-28

    申请号:US18650804

    申请日:2024-04-30

    Abstract: In a general aspect, a system is described for sensing radio frequency (RF) electromagnetic fields. The system includes a laser system that generates probe and coupling laser signals. The system also includes an RF source that generates a reference RF electromagnetic field. The reference RF electromagnetic field is part of a combined RF electromagnetic field that also includes a perturbing RF electromagnetic field. A vapor cell sensor of the system generates an optical signal in response to the probe laser signal, the coupling laser signal, and the combined RF electromagnetic field interacting with a vapor of the vapor cell sensor. The system additionally includes a control system that tunes the coupling laser signal and the reference RF electromagnetic field relative to respective transitions of the vapor. The control system generates, based on the optical signal, a value that represents a property of the perturbing RF electromagnetic field.

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