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公开(公告)号：US12007425B1
公开(公告)日：2024-06-11
申请号：US18503071
申请日：2023-11-06
发明人： Su-Peng Yu , Kent Arnold Nickerson , Rajesh Pandiyan , Hadi Amarloo , Mohammad Noaman , James P. Shaffer
IPC分类号： G01R29/08
CPC分类号： G01R29/0885 , G01R29/0814
摘要： 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.
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2.发明授权公开(公告)号：US11874311B1
公开(公告)日：2024-01-16
申请号：US18296307
申请日：2023-04-05
CPC分类号： G01R29/0885 , G01R29/0892 , G01R35/005
摘要： In a general aspect, radio frequency (RF) electromagnetic radiation can be detected using vapor cell sensors. In some aspects, a system includes a laser system that is configured to generate laser signals that comprise first and second laser signals. The system also includes an optical comb generator and a vapor cell sensor. The optical comb generator is configured to generate a comb spectrum based on the first laser signal. The comb spectrum includes comb lines at respective comb frequencies. The vapor cell sensor contains a vapor and is configured to generate an optical spectrum based on interactions of the vapor with the comb spectrum and the second laser signal. The system also includes an optical detector that is configured to detect the property of the optical spectrum at one or more of the comb frequencies.
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公开(公告)号：US11658461B1
公开(公告)日：2023-05-23
申请号：US18150110
申请日：2023-01-04
IPC分类号： H01S5/0687 , H01S5/065 , H01S5/00
CPC分类号： H01S5/0687 , H01S5/0085 , H01S5/065
摘要： In a general aspect, a laser system includes a laser and a frequency comb generator system. The laser is configured to generate a laser signal, and the frequency comb generator system is configured to generate a frequency comb based on the laser signal. The frequency comb includes frequency comb signals at respective comb frequencies. The laser system also includes a frequency comb dispersion system configured to spatially separate the frequency comb signals onto respective optical channels of the frequency comb dispersion system. The laser system additionally includes a frequency selector system configured to generate a selected frequency signal from the frequency comb signals after separation. The selected frequency signal includes a target separated frequency comb signal. The laser system also includes a frequency shifter configured to alter the selected frequency signal toward a target output frequency of the laser system.
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公开(公告)号：US12117474B1
公开(公告)日：2024-10-15
申请号：US18503062
申请日：2023-11-06
发明人： Su-Peng Yu , Kent Arnold Nickerson , Rajesh Pandiyan , Hadi Amarloo , Mohammad Noaman , James P. Shaffer
CPC分类号： G01R29/0885
摘要： 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.
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5.发明公开公开(公告)号：US20240036094A1
公开(公告)日：2024-02-01
申请号：US18296307
申请日：2023-04-05
IPC分类号： G01R29/08
CPC分类号： G01R29/0885 , G01R29/0892 , G01R35/005
摘要： In a general aspect, radio frequency (RF) electromagnetic radiation can be detected using vapor cell sensors. In some aspects, a system includes a laser system that is configured to generate laser signals that comprise first and second laser signals. The system also includes an optical comb generator and a vapor cell sensor. The optical comb generator is configured to generate a comb spectrum based on the first laser signal. The comb spectrum includes comb lines at respective comb frequencies. The vapor cell sensor contains a vapor and is configured to generate an optical spectrum based on interactions of the vapor with the comb spectrum and the second laser signal. The system also includes an optical detector that is configured to detect the property of the optical spectrum at one or more of the comb frequencies.
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公开(公告)号：US11977107B1
公开(公告)日：2024-05-07
申请号：US18503068
申请日：2023-11-06
发明人： Su-Peng Yu , Kent Arnold Nickerson , Rajesh Pandiyan , Hadi Amarloo , Mohammad Noaman , James P. Shaffer
CPC分类号： G01R29/0878 , G01R29/0807
摘要： 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 establish a circular polarization of the RF electromagnetic wave in the internal cavity.
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公开(公告)号：US20230204714A1
公开(公告)日：2023-06-29
申请号：US18068098
申请日：2022-12-19
IPC分类号： G01S7/285
CPC分类号： G01S7/285
摘要： In a general aspect, a radar system includes a vapor cell sensor system and a radio frequency (RF) optic. The vapor cell sensor system includes a vapor cell sensor, and the RF optic is configured to direct an RF field onto the vapor cell sensor. The RF field includes one or more RF pulses that define a radar signal. The radar system also includes a signal processing system configured to perform operations that include generating a digital signal based on a signal from the vapor cell sensor system. The digital signal represents a measured response of the vapor to the RF field over a time period. The operations also include applying a matched filter to the digital signal to generate a filtered signal and processing the filtered signal to determine properties of the RF field sensed by the vapor cell sensor over the time period.
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公开(公告)号：US11885904B2
公开(公告)日：2024-01-30
申请号：US18068146
申请日：2022-12-19
CPC分类号： G01S7/285 , G01R29/0885 , G01R29/0892 , G01R33/26 , H04B10/70
摘要： In a general aspect, a system for sensing pulses of radio frequency (RF) fields includes a laser system and a vapor cell sensor. The laser system is configured to generate beams of light that include a probe beam of light. The vapor cell sensor has a vapor therein and is configured to allow the beams of light to pass through the vapor. The system also includes an optical detector configured to generate a detector signal based on the probe beam of light. The system includes a signal processing system configured to perform operations that include receiving the detector signal from the optical detector over a time period. The operations also include generating a digital signal based on the detector signal and applying a matched filter to the digital signal to generate a filtered signal. The filtered signal is processed to determine properties of an RF field experienced by the vapor.
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公开(公告)号：US20230296658A1
公开(公告)日：2023-09-21
申请号：US18068146
申请日：2022-12-19
IPC分类号： G01R29/08
CPC分类号： G01R29/0885 , G01R29/0892
摘要： In a general aspect, a system for sensing pulses of radio frequency (RF) fields includes a laser system and a vapor cell sensor. The laser system is configured to generate beams of light that include a probe beam of light. The vapor cell sensor has a vapor therein and is configured to allow the beams of light to pass through the vapor. The system also includes an optical detector configured to generate a detector signal based on the probe beam of light. The system includes a signal processing system configured to perform operations that include receiving the detector signal from the optical detector over a time period. The operations also include generating a digital signal based on the detector signal and applying a matched filter to the digital signal to generate a filtered signal. The filtered signal is processed to determine properties of an RF field experienced by the vapor.
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公开(公告)号：US11681016B1
公开(公告)日：2023-06-20
申请号：US18068098
申请日：2022-12-19
CPC分类号： G01S7/285 , G01R29/0885 , G01R29/0892 , G01R33/26 , H04B10/70
摘要： In a general aspect, a radar system includes a vapor cell sensor system and a radio frequency (RF) optic. The vapor cell sensor system includes a vapor cell sensor, and the RF optic is configured to direct an RF field onto the vapor cell sensor. The RF field includes one or more RF pulses that define a radar signal. The radar system also includes a signal processing system configured to perform operations that include generating a digital signal based on a signal from the vapor cell sensor system. The digital signal represents a measured response of the vapor to the RF field over a time period. The operations also include applying a matched filter to the digital signal to generate a filtered signal and processing the filtered signal to determine properties of the RF field sensed by the vapor cell sensor over the time period.
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