Abstract: A cell for a optically pumped magnetic sensor measures magnetic field by setting alkali metal atoms to a predetermined excitation state by a pump beam and detecting the excitation state by a probe beam. The cell is provided with a glass substrate which seals the alkali metal atoms and an enclosing gas and transmits the pump beam and the probe beam and a coating layer provided on an inner surface of the glass substrate. The coating layer is made of an inorganic material.

Abstract: Provided is an optically pumped atomic magnetometer that can separate and acquire magnetic information of spatially different places at the same time by one probe beam. The optically pumped atomic magnetometer includes a cell containing alkali metal atoms, a pump beam optical system introducing pump beams including circularly polarized light component to different locations of the cell, a probe beam optical system introducing a probe beam including linearly polarized light component to the cell, a detection unit detecting a signal reflecting a rotation angle of a plane of polarization of the probe beam after intersecting with the pump beams, and an information acquisition unit acquiring information related to a magnetic field intensity of each of the different locations from the detected signal. The pump beam optical system includes a modulation unit modulating the pump beams so that one of frequencies and phases of the pump beams is different.

Abstract: There is provided an optically pumped magnetometer, in which a pump light having a first wavelength to spin-polarize a first alkali-metal atom group is made to enter a cell containing the first alkali-metal atom group and a second alkali-metal atom group interacting via spin exchange with the first alkali-metal atom group, a probe light having a second wavelength different from the first wavelength to measure spin polarization of the second alkali-metal atom group is made to enter the cell to form the same optical axis as the pump light, a wavelength discrimination unit is provided to discriminate between the pump light and the probe light that passed through the cell depending on a different in wavelength, and the rotation angle of a polarization plane of the probe light that passed through the cell is measured so that the degree of flexibility of the device layout can be increased.

Abstract: An optically pumped magnetometer and a magnetic sensing method are provided. The optically pumped magnetometer is an atomic magnetic sensor that measures a magnetic field at multiple locations in a single cell and that can separate and simultaneously measure magnetic information of spatially different places in a configuration in which a plurality of probe lights or pump lights are radiated. An optically pumped magnetometer and a magnetic sensing method are provided which, by radiating a relaxing light between a plurality of measurement regions constituted by a pump light and a probe light, prevent mixing of spin polarization and separate spatially different magnetic signals with high accuracy.

Abstract: Provided are an optically pumped magnetometer, comprising: at least one cell containing alkali metal atoms; a pump light optical system configured to cause pump light to enter the cell; a probe light optical system configured to cause probe light to enter the at least one cell so as to intersect with the pump light in the at least one cell; a relaxing light optical system configured to cause a plurality of relaxing lights to enter different positions in an intersection region between the pump light and the probe light; a unit configured to detect the probe light having intersected with the pump light and the plurality of relaxing lights, to thereby output a detection signal; and a unit configured to acquire information on a magnetic field intensity of each of the different positions from the detection signal.

Abstract: A gradiometer in which a probe beam for reading sequentially passes through two magnetic field measurement regions to obtain signals according to magnetic flux densities of the respective regions is formed using an optically pumped magnetometer. In particular, in a gradiometer using a high sensitivity optically pumped magnetometer, a geometric arrangement enabling obtainment of a large signal from a dipole moment as a signal source is defined.

Abstract: A minimum remaining driving range estimated to be the distance which the vehicle can travel on the remaining battery power, in a case where a power load which accessories capable of receiving electric power from a battery place on the battery is the greatest within a variable range in accordance with input of operations, and a maximum remaining driving range estimated to be the distance which the vehicle can travel on the remaining battery power, in a case where the power load is the smallest within the variable range, are displayed on a display unit.

Abstract: Provided is an optically pumped atomic magnetometer that can separate and acquire magnetic information of spatially different places at the same time by one probe beam. The optically pumped atomic magnetometer includes a cell containing alkali metal atoms, a pump beam optical system introducing pump beams including circularly polarized light component to different locations of the cell, a probe beam optical system introducing a probe beam including linearly polarized light component to the cell, a detection unit detecting a signal reflecting a rotation angle of a plane of polarization of the probe beam after intersecting with the pump beams, and an information acquisition unit acquiring information related to a magnetic field intensity of each of the different locations from the detected signal. The pump beam optical system includes a modulation unit modulating the pump beams so that one of frequencies and phases of the pump beams is different.

Abstract: An optical pumping magnetometer is provided that is capable of improving the response of the magnetometer with respect to a magnetic field that varies with a period shorter than the transverse relaxation time of electron spin of an alkali metal atom.

Abstract: An optically pumped magnetometer includes: a modulation unit which allows rectangular wave modulation to an angle of a polarization plane of probe light; a detector for detecting a change of the angle of the polarization plane of the probe light transmitted through a cell; and a differential circuit for obtaining a difference in light intensity between components separated by a polarization splitter. Thus, both a reduction of a light intensity noise of the probe light and a separation and reduction of a noise defined by an inverse of a frequency in a low frequency area can be achieved.

Abstract: A minimum remaining driving range estimated to be the distance which the vehicle can travel on the remaining battery power, in a case where a power load which accessories capable of receiving electric power from a battery place on the battery is the greatest within a variable range in accordance with input of operations, and a maximum remaining driving range estimated to be the distance which the vehicle can travel on the remaining battery power, in a case where the power load is the smallest within the variable range, are displayed on a display unit.

Abstract: An optically pumped magnetometer and a magnetic sensing method acquire information as to strengths of magnetic fields in two different directions. A pump light having a circularly polarized component, first probe light having a liner polarized component and second probe light having a linearly polarized component are emitted to a cell containing a group of alkali metal atoms so as to form a crossing region A magnetic field applying unit applies a static magnetic field in a direction of the pump light incident on the crossing region during the emission of the pump light, the first probe light and the second probe light. And, information as to strengths of magnetic fields in two different directions perpendicular to the direction of the static magnetic field in the cell from the rotation angles of a polarization planes of the first and second probe lights during passage through the cell is calculated.

Abstract: An optically pumped magnetometer having a single optical axis using atomic electron spin or nuclear spin includes a detection unit configured to detect an angle of a polarization plane of probe light having components of linear polarization and a modulation unit configured to apply a modulation to the angle of the polarization plane of the probe light having the components of linear polarization. The modulation unit is configured to control an offset in applying the modulation to the angle of the polarization plane of the probe light having the components of linear polarization according to the angle of the polarization plane of the probe light detected by the detection unit.

Abstract: An optical pumping magnetometer is provided that is capable of improving the response of the magnetometer with respect to a magnetic field that varies with a period shorter than the transverse relaxation time of electron spin of an alkali metal atom.

Abstract: A gradiometer in which a probe beam for reading sequentially passes through two magnetic field measurement regions to obtain signals according to magnetic flux densities of the respective regions is formed using an optically pumped magnetometer. In particular, in a gradiometer using a high sensitivity optically pumped magnetometer, a geometric arrangement enabling obtainment of a large signal from a dipole moment as a signal source is defined.

Abstract: The present invention has an object to provide a nuclear magnetic resonance imaging apparatus or the like that avoids a region with zero sensitivity of an optical magnetometer and allows imaging by strong magnetic resonance when a common magnetic field is used as a bias field of an optical magnetometer and as a magnetostatic field to be applied to a sample. When a direction of a magnetostatic field application unit applying a magnetostatic field to a sample is a z direction, alkali metal cell of a scalar magnetometer is arranged so as not to overlap a region to be imaged in a z direction, and so as not to intersect the region to be imaged in an in-plane direction perpendicular to the z direction.

Abstract: The present invention has an object to provide a nuclear magnetic resonance imaging apparatus or the like that avoids a region with zero sensitivity of an optical magnetometer and allows imaging by strong magnetic resonance when a common magnetic field is used as a bias field of an optical magnetometer and as a magnetostatic field to be applied to a sample. When a direction of a magnetostatic field application unit applying a magnetostatic field to a sample is a z direction, alkali metal cells of a plurality of scalar magnetometers are arranged so as not to overlap a region to be imaged in a z direction, and so as not to intersect the region to be imaged in an in-plane direction perpendicular to the z direction.

Abstract: A content viewing/listening device for viewing and listening to contents has a content information obtaining section that obtains content information, and a content information display control section that performs control to display a content list on a content display section with respect to each of content categories based on the content information obtained in the content information obtaining section. When receiving an instruction to display the content list, the content information display control section produces, on a content presently being viewed and listened to, a presently-viewed/listened-to-content display in such a form as to be visually recognizable and to indicate that the content is presently being viewed and listened to, and displays the content list so that the content list is divided into portions on a plurality of pages if the content list cannot be displayed on one page.

Abstract: An atomic magnetometer includes a cell containing an atomic group, a pump light source, a probe light source, a mirror, and a detector. The cell is disposed between the pump light source and the mirror and between the probe light source and the detector. A pump beam emitted from the pump light source is circularly polarized light. The pump beam passes through the cell and is reflected by the mirror and then passes through the cell again. The probe beam emitted from the probe light source is linearly polarized light. An optical path of the probe beam is parallel to the plane of incidence of the pump beam and is also parallel to the surface of the mirror. The optical path of the probe beam crosses the optical path of the pump beam in the cell. The probe beam which has passed through the cell enters the detector.

Abstract: The cell case (10) of the present invention includes first cooling channel wall surfaces (13c) and second cooling channel wall surfaces (13d) that form a cooling channel (13A) through which cooling air flows for cooling a film-covered battery (1); wherein the area of the opening of a portion that is the outlet (13b) of cooling channel (13A) is greater than the area of the opening of the portion that is the inlet (13a) of the cooling channel (13A).