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| Number | Title | Issue Date |
| 7652473 | Magnetic field measuring optically pumped magnetometer apparatus Providing: quickly brining a vapor cell 119 to a desired temperature when retaining the heat of the vapor cell 119 to enhance the magnetic field detection performance of an optically pumped magnetometer; preventing adherence of atoms in the vapor cell ... | 01/26/2010 |
| 7573264 | Atomic magnetic gradiometer for room temperature high sensitivity magnetic field detection A laser-based atomic magnetometer (LBAM) apparatus measures magnetic fields, comprising: a plurality of polarization detector cells to detect magnetic fields; a laser source optically coupled to the polarization detector cells; and a signal detector that measures th... | 08/11/2009 |
| 7564241 | Isotopic imaging via nuclear resonance fluorescence with laser-based Thomson radiation The present invention utilizes novel laser-based, high-brightness, high-spatial-resolution, pencil-beam sources of spectrally pure hard x-ray and gamma-ray radiation to induce resonant scattering in specific nuclei, i.e., nuclear resonance fluorescence. By monitorin... | 07/21/2009 |
| 7521928 | Subfemtotesla radio-frequency atomic magnetometer for nuclear quadrupole resonance detection A radio-frequency tunable atomic magnetometer for detection of nuclear quadrupole resonance (NQR) from room temperature solids, including detection of nitrogen-containing explosives placed external to a sensor unit. A potassium radio-frequency magnetometer with sens... | 04/21/2009 |
| 7439814 | Method and system for operating an atomic clock with simultaneous control of frequency and magnetic field The present invention relates to a method and system in which multi-coherent resonances of a microwave in which the alkali-metal atoms in the ground state are driven simultaneously by a microwave hyperfine frequency ΩH and a Zeeman frequency ΩZ | 10/21/2008 |
| 7400144 | Magnetic resonance force microscope A magnetic resonance force microscope (MRFM) generator for producing an RF magnetic field uniformly over the whole of a sample. A cantilever with magnetic probe tip is self-excited. Under this condition, spins in the sample are controlled to produce a magnetic reson... | 07/15/2008 |
| 7382124 | Apparatus for producing hyperpolarized noble gas, and nuclear magnetic resonance spectrometer and magnetic resonance imager which use hyperpolarized noble gases This apparatus for producing a hyperpolarized noble gas includes: a hyperpolarized noble gas generating cell in which a noble gas is subjected to an optical pumping in the presence of an alkali metal so as to generate a hyperpolarized noble gas; and a very fine capi... | 06/03/2008 |
| 7378844 | Magnetic resonance system, receiver & method of generating detecting and digitizing analog MR signals solely within the MR shielded environment A magnetic resonance (MR) system and method for generating information about an object is provided. The MR system comprises at least one MR detector configured to sense a plurality of signals within a shielded environment and a digitizing circuit configured for digi... | 05/27/2008 |
| 7372265 | Compensation of magnetic field disturbances due to vibrations in an MRI system A magnetic resonance imaging (MRI) system includes an examination volume (9), a main magnet system (17) for generating a main magnetic field (B0) in the examination volume, a gradient magnet system (25) for generating gradients of the... | 05/13/2008 |
| 7366560 | Nuclear magnetic resonance method for body composition analysis A method is disclosed for analyzing composition of a body part from nuclear magnetic resonance measurements made on the body part. The method includes exciting a predetermined sequence of nuclear magnetic resonance phenomena in the body part and measuring nuclear ma... | 04/29/2008 |
| 7292031 | Micro-cell for NMR gyroscope A cell in one example comprises an alkali metal and a coating of parylene on an interior surface of the cell. In one implementation, the alkali metal may be an optically pumped gaseous phase of an alkali metal. The parylene coating minimizes interaction of the excit... | 11/06/2007 |
| 7282910 | Nuclear magnetic resonance gyroscope A method comprises the steps of providing a nuclear magnetic resonance cell with first, second, and third nuclear moment gases and at least one optically pumpable substance; obtaining first, second, and third measured precession frequencies that correspond to the fi... | 10/16/2007 |
| 7282911 | Detection with evanescent wave probe Methods and systems for spatially resolved spin resonance detection in a sample of material are disclosed. Also disclosed are methods and systems for spatially resolved impedance measurements in a sample of material. The disclosed methods and samples can be used in ... | 10/16/2007 |
| 7276902 | Detection with evanescent wave probe Methods and systems for spatially resolved spin resonance detection in a sample of material are disclosed. Also disclosed are methods and systems for spatially resolved impedance measurements in a sample of material. The disclosed methods and samples can be used in ... | 10/02/2007 |
| 7268546 | Detection with evanescent wave probe Methods and systems for spatially resolved spin resonance detection in a sample of material are disclosed. Also disclosed are methods and systems for spatially resolved impedance measurements in a sample of material. The disclosed methods and samples can be used in ... | 09/11/2007 |
| 7239135 | NMR gyroscope An NMR gyroscope in one example comprises a support structure affixed within an enclosure, an NMR cell affixed to the support structure, a plurality of permanent magnets disposed about the NMR cell to produce a magnetic field within the cell, and a field coil dispos... | 07/03/2007 |
| 7193415 | Magnetic lens, method and focus volume imaging MRI A ferromagnetic lens in the presence of a DC magnetic field and a smaller AC magnetic field creates a localized minimum of the magnitude of the magnetic field vector of the combined magnetic field in a volume defined in free space away from the lens referred to as t... | 03/20/2007 |
| 7173426 | Optical link for transmitting data through air from a plurality of receiver coils in a magnetic resonance imaging system An optical data link is provided for optically transmitting in free space data from a plurality of receiver coils in a magnetic resonance (MR) imaging system. This free space (e.g., through-the-air) optical data link provides a tether-less (i.e., no bundles of physi... | 02/06/2007 |
| 7148683 | Detection with evanescent wave probe Methods and systems for spatially resolved spin resonance detection in a sample of material are disclosed. Also disclosed are methods and systems for spatially resolved impedance measurements in a sample of material. The disclosed methods and samples can be used in ... | 12/12/2006 |
| 7145333 | High sensitivity atomic magnetometer and methods for using same The present invention provides a high sensitivity atomic magnetometer and methods of measuring low intensity magnetic fields that relate to the use of an alkali metal vapor and a buffer gas; increasing the magnetic polarization of the alkali metal vapor thereby incr... | 12/05/2006 |
| 7145403 | Static magnetic field applying structure for use in atomic oscillator The present invention relates to a static magnetic field applying structure for use in an atomic oscillator in which plural sets of magnetic field generating means are provided with spacing interposed among them, and a resonance cell is disposed in a space between t... | 12/05/2006 |
| 7126332 | Downhole high resolution NMR spectroscopy with polarization enhancement An apparatus and method is discussed for characterizing a fluid sample downhole of aliphatic hydrocarbon compounds, aromatic hydrocarbon compound, or connate mud filtrates containing carbon-13 isotopes using an enhanced nuclear magnetic resonance (NMR) signal on a m... | 10/24/2006 |
| 7109706 | Integrated EWP-STM spin resonance microscope A novel spin resonance microscope is disclosed, the microscope design comprising an integrated evanescent wave probe and scanning tunneling microscope tip. The probe and tip may be either the same structure, or they may be separate structures. The integrated design ... | 09/19/2006 |
| 7066319 | Hyperpolarized gas transport and storage devices and associated transport and storage methods using permanent magnets A transport unit includes a plurality of permanent magnets arranged to provide a magnetic holding field for protecting hyperpolarized gas during storage and/or transport. The permanent magnets are configured in a relatively light weight manner to project a substanti... | 06/27/2006 |
| 7061237 | Remote NMR/MRI detection of laser polarized gases An apparatus and method for remote NMR/MRI spectroscopy having an encoding coil with a sample chamber, a supply of signal carriers, preferably hyperpolarized xenon and a detector allowing the spatial and temporal separation of signal preparation and signal detection... | 06/13/2006 |
| 7061240 | Magnetic resonance imaging method with reduced acoustic noise A magnetic resonance imaging method comprises application of a pulse sequence which includes one or more pulses. The pulse sequence having an intrinsic scan time based on a full sampling rate in k-space for a predetermined full ‘field-of-view’ and a reference te... | 06/13/2006 |
| 7038450 | High sensitivity atomic magnetometer and methods for using same The present invention provides a high sensitivity atomic magnetometer and methods of measuring low intensity magnetic fields that relate to the use of an alkali metal vapor and a buffer gas; increasing the magnetic polarization of the alkali metal vapor thereby incr... | 05/02/2006 |
| 6946835 | Spatially resolved spin resonance detection Methods for spatially resolved spin resonance detection in a sample of material, with a resolution as small as 0.5 μ m –1 mm. In one embodiment, a coupler having at least one pair of degenerate orthogonal modes provides an evanescent input signal along one couple... | 09/20/2005 |
| 6888780 | Method and system for operating an atomic clock with simultaneous locking of field and frequency The present invention provides a method and system to simultaneously use the microwave and Zeeman end resonances associated with the same sublevel of maximum (or minimum) azimuthal quantum number m to lock both the atomic clock frequency and the magnetic field to de... | 05/03/2005 |
| 6693426 | Spatially resolved spin resonance detection Methods for spatially resolve spin resonance detection in a sample of material, with a resolution as small as 0.5 μm-1 mm. In one embodiment, a coupler having at least one pair of degenerate orthogonal modes provides an evanescent input signal along one ... | 02/17/2004 |
| 6472869 | Diode laser-pumped magnetometer A diode laser-pumped magnetometer includes a diode laser that emits a polarized pumping laser beam with resonant optical radiation; and a K-cell through which a magnetic field is manifested from an independent source, the K-cell containing atoms with a di... | 10/29/2002 |
| 6054852 | Process and device for recovering signals from narrow-band, optically pumped magnetometers Methods for obtaining a signal from optically pumped magnetometers are described in which a broadband self-oscillation magnetometer (31, 37) is coupled to an absorption cell (32, 40) in such a way that the self-oscillating magnetometer has the function of... | 04/25/2000 |
| 5789921 | Magnetic resonance imaging using hyperpolarized noble gases A method of imaging a spatial distribution of a noble gas by nuclear magnetic resonance spectrometry includes detecting a spatial distribution of at least one noble gas by NMR spectrometry and generating a representation of said spatial distribution of th... | 08/04/1998 |
| 5644232 | Quantitation and standardization of magnetic resonance measurements An MRI apparatus and method useful for both industrial applications and medical applications is provided. The apparatus and procedures are capable of estimating the value of a continuous property, such as concentration, viscosity or the like by interpolat... | 07/01/1997 |
| 5602475 | Laser pumped magnetometer A single-mode semiconductor laser for optical pumping in He and 4 He and high-sensitivity magnetometers based upon these systems. A distributed Bragg reflection (DBR) or distributed feedback (DFB) single mode, preferably InGaAs laser... | 02/11/1997 |
| 5534776 | Coupled radio frequency field and light polarization magnetometer A coupled radio frequency field and light polarization magnetometer. The polarization direction P and the direction of the radio frequency field B1 are kept parallel to one another and perpendicular to the field B0 which is to be mea... | 07/09/1996 |
| 5493223 | Resonance magnetometer with optical pumping using a monolithic laser Resonance magnetometer with optical pumping using a monolithic laser. The laser (30) includes a single element (32) (crystal or fiber) whose length is modulated to provide both a wavelength and amplitude control.... | 02/20/1996 |
| 5436561 | Resonance magnetometer with optical pumping using a monolithic laser Resonance magnetometer with optical pumping using a monolithic laser. The laser (30) includes a single element (32) (crystal or fiber) ensuring whose length is modulated to provide both a wavelength and amplitude control.... | 07/25/1995 |
| 5420549 | Extended linear ion trap frequency standard apparatus A linear ion trap for frequency standard applications is provided with a plurality of trapping rods equally spaced and applied quadrupole rf voltages for radial confinement of atomic ions and biased level pins at each end for axial confinement of the ions... | 05/30/1995 |
| 5272436 | Optical pumping, resonance magnetometer using a light beam with controlled polarization Optical pumping magnetometer with controlled polarization. This magnetometer comprises a linear polarizer (16), whose orientation is controlled (42,44) in such a way that the detection signal is at a maximum, no matter what the orientation of the field to be m... | 12/21/1993 |