公开(公告)号：US11474175B2

公开(公告)日：2022-10-18

申请号：US16741302

申请日：2020-01-13

Applicant: Michael D. Bulatowicz

Inventor： Michael D. Bulatowicz

IPC: G01R33/38 ,  G01R33/26 ,  H05B3/03 ,  H05B3/06

Abstract: A heater system includes a current source configured to generate an input current and to receive a return current. The system also includes a heater configured to generate heat in response to the input current. The system further includes a plurality of current lead wires interconnecting the current source and the heater and being configured to provide the input current to the heater and to conduct the return current from the heater. Each of the plurality of current lead wires is arranged on a separate substrate layer such that each of the plurality of current lead wires are each spaced apart from each other. At least one of the input current and the return current is divided to be conducted on two or more of the plurality of current lead wires.

公开(公告)号：US10782368B2

公开(公告)日：2020-09-22

申请号：US15990974

申请日：2018-05-29

Applicant: Michael D. Bulatowicz ,  Thad G. Walker ,  Michael S. Larsen

Inventor： Michael D. Bulatowicz ,  Thad G. Walker ,  Michael S. Larsen

IPC: G01R33/26 ,  G01R33/032

Abstract: One example includes a magnetometer system. The system includes a sensor cell comprising alkali metal vapor and a laser system configured to provide an optical pump beam through the sensor cell in a pulsed manner to facilitate precession of the alkali metal vapor in response to an external magnetic field and to provide an optical probe beam through the sensor cell in a pulsed manner based on a precession frequency of the alkali metal vapor. The system also includes a detection system configured to detect the precession of the alkali metal vapor in response to a detection beam corresponding to the optical probe beam exiting the sensor cell and to calculate an amplitude and direction of the external magnetic field based on the detected precession of the alkali metal vapor.

公开(公告)号：US09992581B2

公开(公告)日：2018-06-05

申请号：US15081043

申请日：2016-03-25

Applicant: Michael D. Bulatowicz

Inventor： Michael D. Bulatowicz

IPC: H04R3/00 ,  H04R23/00

CPC classification number: H04R23/008 ,  H04R23/006 ,  H04R2410/00

Abstract: One embodiment includes an optical microphone system. The system includes a laser configured to emit an optical beam at a linear polarization and an optical cavity system comprising a membranous mirror that is configured to reflect the optical beam and to vibrate in response to an acoustic input signal. The optical cavity system includes at least one photodetector configured to receive at least a portion of the optical beam to generate a microphone signal that is indicative of the vibration of the membranous mirror resulting from the acoustic input signal based on the reflection of the optical beam. The system further includes an acoustic processor configured to process the microphone signal to calculate a frequency of the acoustic input signal.

公开(公告)号：US09645205B2

公开(公告)日：2017-05-09

申请号：US13711199

申请日：2012-12-11

Applicant: Michael S. Larsen ,  Robert C. Griffith ,  Michael D. Bulatowicz ,  Philip R. Clark

Inventor： Michael S. Larsen ,  Robert C. Griffith ,  Michael D. Bulatowicz ,  Philip R. Clark

IPC: G01V3/00 ,  G01R33/24 ,  G01R33/26

CPC classification number: G01R33/26 ,  G01R33/032 ,  G01R33/24 ,  G01R33/443 ,  G01R33/60

Abstract: One embodiment of the invention includes a magnetometer system. The system includes a sensor cell comprising alkali metal particles and a probe laser configured to provide a probe beam through the sensor cell. The system also includes a detection system configured to implement nuclear magnetic resonance (NMR) detection of a vector magnitude of an external magnetic field in a first of three orthogonal axes based on characteristics of the probe beam passing through the sensor cell and to implement electron paramagnetic resonance (EPR) detection of a vector magnitude of the external magnetic field in a second and a third of the three orthogonal axes based on the characteristics of the probe beam passing through the sensor cell. The system further includes a controller configured to calculate a scalar magnitude of the external magnetic field based on the magnitude of the external magnetic field in each of the three orthogonal axes.

公开(公告)号：US09618362B2

公开(公告)日：2017-04-11

申请号：US14295091

申请日：2014-06-03

Applicant: Michael D. Bulatowicz ,  Michael S. Larsen

Inventor： Michael D. Bulatowicz ,  Michael S. Larsen

IPC: G01V3/00 ,  G01C25/00 ,  G01C19/62

CPC classification number: G01C25/00 ,  G01C19/62 ,  G01C25/005

Abstract: One embodiment includes a nuclear magnetic resonance (NMR) gyroscope system. The system includes a vapor cell comprising an alkali metal and a plurality of gyromagnetic isotopes and a pump laser configured to generate an optical pump beam configured to spin-polarize the alkali metal. The system also includes a probe laser that generates an optical probe beam and a detection system configured to monitor the optical probe beam and to calculate a rotation of the NMR gyroscope system about a sensitive axis based on a modulation of the optical probe beam in response to precession of the plurality of gyromagnetic isotopes resulting from the spin-polarization of the alkali metal. The system further includes a calibration controller that modulates a characteristic of the optical pump beam to substantially mitigate bias errors associated with the gyromagnetic isotopes in the calculation of the rotation of the NMR gyroscope system about the sensitive axis.

公开(公告)号：US09417260B2

公开(公告)日：2016-08-16

申请号：US14103595

申请日：2013-12-11

Applicant: Michael D. Bulatowicz

Inventor： Michael D. Bulatowicz

IPC: G01P15/093 ,  G01P15/13

CPC classification number: G01P15/093 ,  G01P15/13

Abstract: An example optical accelerometer system is provided. An optical beam is provided having a predefined center frequency and is frequency-modulated about the predefined center frequency. An optical cavity includes a first mirror at a first end and a second mirror at a second end of the optical cavity. The second mirror is movable along the axial length of the optical cavity in response to an external acceleration, and the optical cavity receives the optical beam and emits a resonated optical beam. An acceleration detection system measures an intensity of the resonated optical beam and calculates a magnitude of the external acceleration along the axial length of the optical cavity based on the intensity of the resonated optical beam resulting from motion of the second mirror. A stabilization system stabilizes the predefined center frequency of the optical beam independently of the external acceleration based on the modulation of the optical beam.

Abstract translation: 提供了一个示例性的光学加速度计系统。 提供具有预定中心频率并且关于预定中心频率进行频率调制的光束。 光腔包括在第一端处的第一反射镜和在光腔的第二端的第二反射镜。 响应于外部加速度，第二反射镜可沿着光腔的轴向长度移动，并且光腔接收光束并发射共振的光束。 加速度检测系统测量共振光束的强度，并且基于由第二反射镜的运动产生的共振光束的强度来计算沿着光腔的轴向长度的外部加速度的大小。 稳定系统基于光束的调制，独立于外部加速度稳定光束的预定中心频率。

公开(公告)号：US08994371B2

公开(公告)日：2015-03-31

申请号：US13332536

申请日：2011-12-21

Applicant: Michael S. Larsen ,  Robert Griffith ,  Michael D. Bulatowicz ,  Philip R. Clark

Inventor： Michael S. Larsen ,  Robert Griffith ,  Michael D. Bulatowicz ,  Philip R. Clark

IPC: G01V3/00 ,  G01R33/00 ,  G01R33/12

CPC classification number: G01R33/0041 ,  G01C19/62 ,  G01R33/1284 ,  G01R33/26

Abstract: One embodiment of the invention includes an atomic sensing system. The system includes an atomic sensing device configured to generate an output signal along an output axis in response to a plurality of control parameters. The system also includes a signal generator configured to apply a reference signal to a cross-axis that is approximately orthogonal to the output axis. The system also includes a phase measurement system configured to demodulate the output signal relative to the reference signal to measure a relative phase alignment between the output axis and a physical axis of the atomic sensing device based on the reference signal.

Abstract translation: 本发明的一个实施例包括原子感测系统。 该系统包括原子感测装置，其被配置为响应于多个控制参数沿着输出轴产生输出信号。 该系统还包括信号发生器，该信号发生器被配置为将参考信号施加到大致正交于输出轴的交叉轴。 该系统还包括相位测量系统，其被配置为相对于参考信号解调输出信号，以基于参考信号来测量原子感测装置的输出轴和物理轴之间的相对相位对准。

公开(公告)号：US10126324B2

公开(公告)日：2018-11-13

申请号：US15615438

申请日：2017-06-06

Applicant: Robert E. Stewart ,  Michael D. Bulatowicz

Inventor： Robert E. Stewart ,  Michael D. Bulatowicz

IPC: G01P21/00 ,  G01P15/125 ,  G01P15/13 ,  G01P15/08

Abstract: One embodiment includes a method for dynamic self-calibration of an accelerometer system. The method includes forcing a proof-mass associated with a sensor of the accelerometer system in a first direction to a first predetermined position and obtaining a first measurement associated with the sensor in the first predetermined position via at least one force/detection element of the sensor. The method also includes forcing the proof-mass to a second predetermined position and obtaining a second measurement associated with the sensor in the second predetermined position via the at least one force/detection element of the sensor. The method further includes calibrating the accelerometer system based on the first and second measurements.

公开(公告)号：US09970999B2

公开(公告)日：2018-05-15

申请号：US13907293

申请日：2013-05-31

Applicant: Michael S. Larsen ,  Henry C. Abbink ,  Thad G. Walker ,  Michael D. Bulatowicz

Inventor： Michael S. Larsen ,  Henry C. Abbink ,  Thad G. Walker ,  Michael D. Bulatowicz

IPC: G01R33/26 ,  G01R33/32 ,  G01C19/62

CPC classification number: G01R33/26 ,  G01C19/62 ,  G01R33/323

Abstract: One embodiment includes a nuclear magnetic resonance (NMR) sensor system. The system includes a pump laser configured to generate an optical pump beam at a first wavelength and a probe laser configured to generate an optical probe beam at a second wavelength that is different from the first wavelength. The system also includes beam optics configured to direct the pump laser and the probe laser along orthogonal axes through a sensor cell comprising an alkali metal vapor. The system further includes detection optics that include a photodetector assembly configured to measure at least one characteristic associated with the optical probe beam leaving the sensor cell for measurement of a polarization vector of the alkali metal vapor. The detection optics can include at least one filter configured to filter light having the first wavelength and to pass light having the second wavelength to the photodetector assembly.

公开(公告)号：US09500725B2

公开(公告)日：2016-11-22

申请号：US13960127

申请日：2013-08-06

Applicant: Michael D. Bulatowicz

Inventor： Michael D. Bulatowicz

IPC: G01R33/26 ,  G01C19/62

CPC classification number: G01R33/26 ,  G01C19/62

Abstract: An atomic sensor system includes a magnetic field generator configured to generate a magnetic field along an axis and a probe laser configured to generate an optical probe beam. Beam optics direct the optical probe beam through a sensor cell comprising an alkali metal vapor such that the optical probe beam has at least a vector component along the axis. The system also includes detection optics comprising a photodetector assembly configured to measure a Faraday rotation associated with the optical probe beam exiting the sensor cell and to generate a feedback signal based on the Faraday rotation associated with the optical probe beam exiting the sensor cell. The system further includes a laser controller configured to modulate a frequency of the optical probe beam about a center frequency and to substantially stabilize the center frequency of the optical probe beam based on the feedback signal.

Abstract translation: 原子传感器系统包括被配置为沿着轴产生磁场的磁场发生器和被配置为产生光学探测光束的探测激光器。 光束光学器件将光学探针光束引导通过包含碱金属蒸气的传感器单元，使得光学探针光束沿轴线至少具有矢量分量。 该系统还包括检测光学器件，其包括光电检测器组件，其被配置为测量与离开传感器单元的光学探针光束相关联的法拉第旋转，并且基于与离开传感器单元的光学探针光束相关联的法拉第旋转生成反馈信号。 该系统还包括激光控制器，该激光控制器被配置成基于反馈信号调制围绕中心频率的光学探针光束的频率并且基本上稳定光学探针光束的中心频率。