公开(公告)号：US20100194506A1

公开(公告)日：2010-08-05

申请号：US12364189

申请日：2009-02-02

Applicant: Michael D. Bulatowicz ,  Michael S. Larsen

Inventor： Michael D. Bulatowicz ,  Michael S. Larsen

IPC: H01F7/00 ,  G01C19/00

CPC classification number: H01F7/202 ,  G01C19/60 ,  G01R33/381

Abstract: One embodiment of the invention includes a magnetic solenoid. The magnetic solenoid includes an elongated sidewall that extends between spaced apart ends. The elongated sidewall can surround a central axis that extends longitudinally along the sidewall. The elongated sidewall can have a radius that is defined by a compound equation that varies the radius as a function of position along the central axis.

Abstract translation: 本发明的一个实施例包括一个磁性螺线管。 磁性螺线管包括在间隔开的端部之间延伸的细长侧壁。 细长侧壁可围绕沿着侧壁纵向延伸的中心轴线。 细长的侧壁可以具有由作为沿着中心轴的位置的函数改变半径的复合方程所限定的半径。

公开(公告)号：US20230184553A1

公开(公告)日：2023-06-15

申请号：US18074668

申请日：2022-12-05

Applicant: GORDON BARBOUR MORRISON ,  MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN ,  Bob Buckley

Inventor： GORDON BARBOUR MORRISON ,  MICHAEL D. BULATOWICZ ,  MICHAEL S. LARSEN ,  Bob Buckley

IPC: G01C19/62

CPC classification number: G01C19/62

Abstract: One example includes an atomic sensor system. The system includes an optical source configured to provide an optical beam and a plurality of sensor cell systems. Each of the sensor cell systems includes sensing media enclosed in a volume therein. The system also includes optics configured to provide the optical beam to each of the sensor cell systems to provide interaction of the optical beam with the vapor in each of the respective sensor cell systems. The optical beam exiting each of the sensor cell systems is a respective detection beam. The system further includes a detection system comprising at least one configured to receive the detection beam from each of the sensor cell systems and to determine a measurable parameter based on an optical characteristic associated with the detection beam from each of the sensor cell systems.

公开(公告)号：US10451694B2

公开(公告)日：2019-10-22

申请号：US14188436

申请日：2014-02-24

Applicant: Michael D. Bulatowicz

Inventor： Michael D. Bulatowicz

IPC: G01R33/44 ,  G01C19/62 ,  G01R33/032 ,  G01C19/60

Abstract: One example embodiment includes an atomic sensor system. The system includes a vapor cell comprising an alkali metal vapor that precesses in response to a magnetic field. The system also includes a probe laser that generates an optical probe beam that is modulated about a center frequency and which is provided through the vapor cell. A photodetector assembly generates an intensity signal corresponding to a Faraday rotation associated with a detection beam that is associated with the optical probe beam exiting the vapor cell. The system further includes a detection system configured to demodulate the intensity signal at a frequency corresponding to a modulation frequency of the optical probe beam and to generate a feedback signal based on the demodulated intensity signal. The feedback signal is provided to the probe laser to substantially stabilize the center frequency of the optical probe beam based on the feedback signal.

公开(公告)号：US10451690B2

公开(公告)日：2019-10-22

申请号：US15714669

申请日：2017-09-25

Applicant: Michael D. Bulatowicz

Inventor： Michael D. Bulatowicz

IPC: G01R33/34 ,  G01R33/565 ,  B05D7/00 ,  B32B15/00 ,  B32B15/01 ,  B32B18/00 ,  C04B37/00 ,  C04B37/02 ,  G01C19/00 ,  G01C19/60 ,  G01R33/00 ,  G01R33/42

Abstract: One example includes a method for fabricating a compound material. The method includes providing a first discrete material layer having a first thickness dimension. The first discrete material layer includes a first material having a first magnetic susceptibility. The method also includes depositing a second discrete material layer having a second thickness dimension over the first discrete material layer. The second discrete material layer can include a second material having a second magnetic susceptibility. The relative first and second thickness dimensions can be selected to provide a desired magnetic susceptibility of the compound material.

公开(公告)号：US10416245B2

公开(公告)日：2019-09-17

申请号：US15080876

申请日：2016-03-25

Applicant: Michael D. Bulatowicz

Inventor： Michael D. Bulatowicz

IPC: G01R33/26 ,  G01R33/032 ,  G01C19/62 ,  G01R33/00 ,  G01N24/00

Abstract: One example includes a sensor system. A cell system includes a pump laser which generates a pump beam to polarize alkali metal vapor enclosed within a sensor cell. A detection system includes a probe laser to generate a probe beam. The detection system can calculate at least one measurable parameter based on characteristics of the probe beam passing through the sensor cell resulting from precession of the polarized alkali metal vapor in response to an applied magnetic field. A pump beam control system pulse-width modulates a frequency of the pump beam to provide a pulse-width modulated (PWM) pump beam, and controls a duty-cycle of the PWM pump beam based on the characteristics of the probe beam passing through the sensor cell in a feedback manner to control polarization uniformity of the alkali metal vapor and to mitigate the effects of AC Stark shift on the at least one measurable parameter.

公开(公告)号：US10330696B2

公开(公告)日：2019-06-25

申请号：US15079207

申请日：2016-03-24

Applicant: Michael D. Bulatowicz ,  Robert C. Griffith ,  Henry C. Abbink ,  Daryl K. Sakaida ,  Philip R. Clark

Inventor： Michael D. Bulatowicz ,  Robert C. Griffith ,  Henry C. Abbink ,  Daryl K. Sakaida ,  Philip R. Clark

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

Abstract: Embodiments of the invention include an accelerometer system. The system includes an accelerometer sensor comprising first and second electrode configurations and an inertial mass between the first and second electrode configurations. In one example, the accelerometer sensor being fabricated as symmetrically arranged about each of three orthogonal mid-planes. The system also includes an accelerometer controller configured to apply control signals to each of the first and second electrode configurations to provide respective forces to maintain the inertial mass at a null position between the first and second electrode configurations. The accelerometer controller can measure a first pickoff signal and a second pickoff signal associated with the respective first and second electrode configurations. The first and second pickoff signals can be indicative of a displacement of the inertial mass relative to the null position. The accelerometer controller can calculate an acceleration based on the first and second pickoff signals.

公开(公告)号：US20180372813A1

公开(公告)日：2018-12-27

申请号：US16053535

申请日：2018-08-02

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 ,  G01R33/00

CPC classification number: G01R33/26 ,  G01R33/0041 ,  G01R33/0322

Abstract: One example includes a magnetometer system that includes a sensor cell comprising alkali metal vapor and at least one measurement zone corresponding to a three-dimensional spatial region within the sensor cell. The system also includes 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：US09829544B2

公开(公告)日：2017-11-28

申请号：US14269547

申请日：2014-05-05

Applicant: Michael D. Bulatowicz

Inventor： Michael D. Bulatowicz

IPC: G01V3/00 ,  G01R33/032 ,  G01R33/26 ,  G01R33/3875

CPC classification number: G01R33/032 ,  G01C19/62 ,  G01R33/26 ,  G01R33/3875

Abstract: One example embodiment includes an atomic sensor system. The system includes a magnetic field generator configured to generate a magnetic field in a volume. The system also includes a vapor cell arranged within the volume and comprising a polarized alkali metal vapor. The system further includes at least one magnetic field trimming system configured to generate a magnetic field gradient within the vapor cell separate from the magnetic field to provide a substantially uniform collective magnetic field within the vapor cell.

公开(公告)号：US09726494B2

公开(公告)日：2017-08-08

申请号：US14278940

申请日：2014-05-15

Applicant: Michael D. Bulatowicz ,  Michael S. Larsen

Inventor： Michael D. Bulatowicz ,  Michael S. Larsen

IPC: G01C19/62 ,  G01R33/26

CPC classification number: G01C19/62 ,  G01R33/26

Abstract: One embodiment includes an atomic sensor system. The system includes a vapor cell that is sealed to enclose an alkali metal that is spin-polarized by an optical beam. The vapor cell includes a mirror at a distal end. The system also includes an optical system including a photodetector system and a laser that generates the optical beam. The optical beam is provided into a proximal end of the vapor cell and is reflected back to the photodetector system via the mirror as a reflected optical beam to generate at least one intensity signal. The optical system further includes a control system that modulates a wavelength of the optical beam between an on-resonance wavelength and an off-resonance wavelength with respect to the alkali metal. The system also includes a processor that calculates a measurable parameter associated with the atomic sensor system based on the at least one intensity signal.

公开(公告)号：US09612256B2

公开(公告)日：2017-04-04

申请号：US13951000

申请日：2013-07-25

Applicant: Michael D. Bulatowicz

Inventor： Michael D. Bulatowicz

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

CPC classification number: G01P21/00 ,  G01P15/125 ,  G01P15/131 ,  G01P2015/0828

Abstract: One embodiment of the invention includes an accelerometer sensor system. The system includes a sensor comprising a proofmass and electrodes and being configured to generate acceleration feedback signals based on control signals applied to the electrodes in response to an input acceleration. The system also includes an acceleration component configured to measure the input acceleration based on the acceleration feedback signals. The system further includes an acceleration controller configured to generate the control signals to define a first scale-factor range associated with the sensor and to define a second scale-factor range associated with the sensor. The control system includes a calibration component configured to calibrate the accelerometer sensor system with respect to range-dependent bias error based on a difference between the measured input acceleration at each of the first scale-factor range and the second scale-factor range.