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公开(公告)号：US11150264B2
公开(公告)日：2021-10-19
申请号：US16539984
申请日：2019-08-13
发明人： Neil Krueger , Joshua Dorr , Steven Tin , Chad Fertig , Arthur Savchenko
IPC分类号： G01P15/097 , B81B3/00
摘要： An optomechanical device comprising an assembly, one or more laser devices configured to generate a first optical signal and a second optical signal, and circuitry. The circuitry is configured to modulate the second optical signal and output the first optical signal and the second optical signal to the assembly. A first element of a first beam structure shifts the first spatial frequency of the assembly by approximately 180 degrees and a second element of a second beam structure shifts the second spatial frequency of the assembly by approximately 180 degrees such that a first optical resonance is generated, which is probed by the first optical signal interacting with the assembly, and a second optical resonance is generated, which is probed by the second optical signal interacting with the assembly, where the first optical resonance and the second optical resonance are spectrally separated by a minimum threshold.
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公开(公告)号：US20210018531A1
公开(公告)日：2021-01-21
申请号：US16514905
申请日：2019-07-17
发明人： Neil Krueger , Matthew Puckett , Chad Fertig , Arthur Savchenko , Steven Tin , Joshua Dorr
IPC分类号： G01P15/093 , G01H9/00 , G01P15/08
摘要： This disclosure is related to devices, systems, and techniques for inducing mechanical vibration in one or more mechanical structures. For example, a system includes a mechanical structure extending along a longitudinal axis. The mechanical structure includes a set of mechanical beams, where the set of mechanical beams are configured to guide a modulated optical signal, and where the set of mechanical beams includes a first mechanical beam and a second mechanical beam separated by a gap. The first mechanical beam includes at least one of a first corrugated inner edge parallel to the longitudinal axis and a first corrugated outer edge parallel to the longitudinal axis. The second mechanical beam includes at least one of a second corrugated inner edge parallel to the longitudinal axis and a second corrugated outer edge parallel to the longitudinal axis.
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公开(公告)号：US11119116B2
公开(公告)日：2021-09-14
申请号：US16371762
申请日：2019-04-01
发明人： Chad Fertig , Arthur Savchenko , Joshua Dorr , Neil Krueger , Steven Tin
IPC分类号： G01P15/097 , G01P15/08
摘要： This disclosure is related to devices, systems, and techniques for determining, using an electro-opto-mechanical accelerometer system, a frequency value in order to determine an acceleration value. For example, an accelerometer system includes a light-emitting device configured to emit an optical signal and a circuit. The circuit is configured to modulate, using a modulating device, the optical signal to produce a modulated optical signal, receive, using a photoreceiver, the modulated optical signal, convert, using the photoreceiver, the modulated optical signal into an electrical signal, process the electrical signal to obtain a processed electrical signal, and transmit the processed electrical signal to the modulating device, where the modulating device is configured to modulate the optical signal based on the processed electrical signal. Additionally, the circuit is configured to determine, based on the processed electrical signal, a frequency value.
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公开(公告)号：US10956768B2
公开(公告)日：2021-03-23
申请号：US16391114
申请日：2019-04-22
发明人： Joshua Dorr , Chad Fertig , Arthur Savchenko , Steven Tin , Neil Krueger
摘要： An optomechanical device for modulating an optical signal for reducing thermal noise and tracking mechanical resonance of a proof mass assembly comprises a circuit configured to receive, from a light-emitting device, the optical signal and modulate the optical signal to remove thermal noise and to drive a mechanical response frequency to the mechanical resonance of the proof mass assembly using a cooling feedback signal and a mechanical resonance feedback signal. The circuit is further configured to generate, using the modulated optical signal, the cooling feedback signal to correspond to a thermal noise signal of the modulated optical signal with a total loop gain of zero and a phase difference of 180 degrees and generate, using the modulated optical signal, the mechanical resonance feedback signal to drive the mechanical response frequency of the modulated optical signal to the mechanical resonance.
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公开(公告)号：US20210018530A1
公开(公告)日：2021-01-21
申请号：US16514864
申请日：2019-07-17
发明人： Neil Krueger , Matthew Puckett , Arthur Savchenko , Chad Fertig , Steven Tin , Joshua Dorr
IPC分类号： G01P15/093 , G01H9/00 , G01P15/08
摘要： This disclosure is related to devices, systems, and techniques for securing one or more mechanical structures to a frame of a proof mass assembly. For example, a system includes a light-emitting device configured to emit an optical signal, a circuit including a modulating device configured to modulate the optical signal to produce a modulated optical signal, and a mechanical assembly. The mechanical assembly includes an anchor structure including a set of connecting structures configured to pass the modulated optical signal, where the set of connecting structures includes two or more connecting structures, and where a width of each connecting structure of the set of connecting structures is less than a maximum width of the anchor structure and a mechanical structure intersecting with the anchor structure, the mechanical structure configured to guide the modulated optical signal.
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公开(公告)号：US20200309812A1
公开(公告)日：2020-10-01
申请号：US16371762
申请日：2019-04-01
发明人： Chad Fertig , Arthur Savchenko , Joshua Dorr , Neil Krueger , Steven Tin
IPC分类号： G01P15/097 , G01P15/08
摘要： This disclosure is related to devices, systems, and techniques for determining, using an electro-opto-mechanical accelerometer system, a frequency value in order to determine an acceleration value. For example, an accelerometer system includes a light-emitting device configured to emit an optical signal and a circuit. The circuit is configured to modulate, using a modulating device, the optical signal to produce a modulated optical signal, receive, using a photoreceiver, the modulated optical signal, convert, using the photoreceiver, the modulated optical signal into an electrical signal, process the electrical signal to obtain a processed electrical signal, and transmit the processed electrical signal to the modulating device, where the modulating device is configured to modulate the optical signal based on the processed electrical signal. Additionally, the circuit is configured to determine, based on the processed electrical signal, a frequency value.
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公开(公告)号：US11372019B2
公开(公告)日：2022-06-28
申请号：US16539949
申请日：2019-08-13
发明人： Neil Krueger , Chad Fertig , Matthew Puckett , Arthur Savchenko , Steven Tin , Joshua Dorr
IPC分类号： G01P15/093 , B81B3/00 , B81B7/02
摘要： An optomechanical device optomechanical device for stabilizing an optomechanical resonator comprising a circuit configured to generate a first optical signal and a second optical signal, modulate the first optical signal, modulate the second optical signal, and combine the first optical signal and the second optical signal into a combined optical signal to direct the combined optical signal into an assembly. An inner sidewall of a first beam structure of the assembly has a first inner spatial frequency correspond to a second inner spatial frequency of an inner sidewall of a second beam structure of the assembly and an outer sidewall of the first beam structure has a first outer spatial frequency correspond to a second outer spatial frequency of an outer sidewall of the second beam structure.
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公开(公告)号：US20210072279A1
公开(公告)日：2021-03-11
申请号：US16539949
申请日：2019-08-13
发明人： Neil Krueger , Chad Fertig , Matthew Puckett , Arthur Savchenko , Steven Tin , Joshua Dorr
IPC分类号： G01P15/093 , B81B3/00 , B81B7/02
摘要： An optomechanical device optomechanical device for stabilizing an optomechanical resonator comprising a circuit configured to generate a first optical signal and a second optical signal, modulate the first optical signal, modulate the second optical signal, and combine the first optical signal and the second optical signal into a combined optical signal to direct the combined optical signal into an assembly. An inner sidewall of a first beam structure of the assembly has a first inner spatial frequency correspond to a second inner spatial frequency of an inner sidewall of a second beam structure of the assembly and an outer sidewall of the first beam structure has a first outer spatial frequency correspond to a second outer spatial frequency of an outer sidewall of the second beam structure.
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公开(公告)号：US10731987B2
公开(公告)日：2020-08-04
申请号：US16179437
申请日：2018-11-02
摘要： A stimulated Brillouin scattering (SBS) gyroscope comprises a resonator; a first laser in communication with the resonator and configured to emit a first optical signal propagating in a first direction, the first optical signal producing a first SBS signal counter-propagating in a second direction; a second laser in communication with the resonator and configured to emit a second optical signal propagating in the first direction, the second optical signal producing a second SBS signal counter-propagating in the second direction; a third laser in communication with the resonator and configured to emit a third optical signal propagating in the second direction, the third optical signal producing a third SBS signal counter-propagating in the first direction. At least one photodetector is coupled to the resonator and receives the SBS signals, which are combined in the photodetector to produce electrical signals that include rotational rate information encoded in frequencies of the electrical signals.
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公开(公告)号：US11079227B2
公开(公告)日：2021-08-03
申请号：US16371657
申请日：2019-04-01
发明人： Chad Fertig , Arthur Savchenko , Steven Tin , Neil Krueger , Joshua Dorr
IPC分类号： G01C19/5614 , G01C19/5621
摘要： This disclosure is related to devices, systems, and techniques for determining, using an electro-opto-mechanical accelerometer system, a frequency value in order to determine an acceleration value. For example, an accelerometer system includes a light-emitting device configured to emit an optical signal and a circuit. The circuit is configured to determine a frequency value corresponding to the optical signal and determine an acceleration value based on the frequency value. Additionally, the accelerometer system includes a housing that encloses the light-emitting device, the circuit, and Helium gas, where the Helium gas defines a partial pressure within a range between 0.1 torr and 760 torr.
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