Abstract: A quantum interference device includes a light emitting element; and an atomic cell on which light from the light emitting element is incident. The atomic cell accommodates alkali metal atoms therein, and a coating film containing a polydiyne compound or a polydiene compound is disposed on an inner wall of the atomic cell.

Abstract: An atomic oscillator includes an atom cell that includes walls defining an internal space in which alkali metal atoms are contained, a light emitting element that emits light for exciting the alkali metal atoms, and a light detecting element that detects the light transmitted through the atom cell, in which the atom cell includes a first portion in which gaseous alkali metal atoms are contained and through which light from the light emitting element passes along an x-axis, a second portion in which liquid or solid alkali metal atoms are contained, and a third portion that is positioned between the first portion and the second portion and couples the first portion and the second portion, and in the third portion, a distance between two walls facing each other along a y-axis orthogonal to the x-axis decreases from the first portion toward the second portion along the y-axis at a constant decrease rate.

Abstract: A gas cell includes a cell having a principal chamber having a coating material film formed on an inside wall, a reservoir arranged with the principal chamber along the longitudinal direction and communicating with to the principal chamber, a reinforcement section extending from the reservoir side of the principal chamber in an X-axis direction along the reservoir, an opening section disposed on an opposite side of the reservoir to the principal chamber, and a sealing section adapted to block the opening section, and an alkali metal gas encapsulated in the principal chamber, and the reinforcement section is provided with one of at least one hole and at least one groove.

Abstract: A quantum interference device includes a light emitting element; and an atomic cell on which light from the light emitting element is incident. The atomic cell accommodates alkali metal atoms therein, and a coating film containing a polydiyne compound or a polydiene compound is disposed on an inner wall of the atomic cell.

Abstract: An atomic oscillator includes: a light-emitting element; an atom cell that includes a first surface on which light beams from the light-emitting element are incident and a second surface from which the light beams incident on the first surface are emitted and accommodates alkali metal atoms in a gas state; a shield that accommodates the atom cell and has a magnetic shielding property, the shield having an opening; a heat transfer member that is in contact with a portion of the atom cell via an opening of the shield and has a thermal conductivity higher than a thermal conductivity of the atom cell; a temperature control element that is in contact with the heat transfer member and controls a temperature of the atom cell; and a light-receiving element that receives the light beams emitted from the second surface.

Abstract: An atomic oscillator includes an atom cell that includes walls defining an internal space in which alkali metal atoms are contained, a light emitting element that emits light for exciting the alkali metal atoms, and a light detecting element that detects the light transmitted through the atom cell, in which the atom cell includes a first portion in which gaseous alkali metal atoms are contained and through which light from the light emitting element passes along an x-axis, a second portion in which liquid or solid alkali metal atoms are contained, and a third portion that is positioned between the first portion and the second portion and couples the first portion and the second portion, and in the third portion, a distance between two walls facing each other along a y-axis orthogonal to the x-axis decreases from the first portion toward the second portion along the y-axis at a constant decrease rate.

Abstract: A gas cell includes a cell main body having a first chamber defined by an inner wall, and a first paraffin film provided on the inner wall, wherein in the first chamber, a gas which interacts with an electromagnetic wave is stored, the first paraffin film is a pure paraffin film, and a paraffin constituting the first paraffin film is arranged such that the directions of the molecular axes are aligned.

Abstract: In a magnetic field measurement apparatus, a light source irradiates a gas cell with linearly polarized light serving as pump light and probe light in a Z axis direction, and a magnetic field generator applies, to the gas cell, a magnetic field Ax which is a time function f(t) having the amplitude A0 taking n fixed values fi (where i=1, . . . , and n), and a magnetic field Ay which is a time function g(t) having the amplitude A0 taking m fixed values gj (where j=1, . . . , and m) in each of X axis and Y axis directions. A calculation controller calculates a magnetic field C (Cx, Cy, Cz) of a measurement region using the X axis and Y axis components Ax and Ay of an artificial magnetic field A, and a spin polarization degree Mx corresponding to a measurement value W? from a magnetic sensor.

Abstract: An atomic oscillator includes: a light-emitting element; an atom cell that includes a first surface on which light beams from the light-emitting element are incident and a second surface from which the light beams incident on the first surface are emitted and accommodates alkali metal atoms in a gas state; a shield that accommodates the atom cell and has a magnetic shielding property, the shield having an opening; a heat transfer member that is in contact with a portion of the atom cell via an opening of the shield and has a thermal conductivity higher than a thermal conductivity of the atom cell; a temperature control element that is in contact with the heat transfer member and controls a temperature of the atom cell; and a light-receiving element that receives the light beams emitted from the second surface.

Abstract: In a magnetic field measurement apparatus, a light source irradiates a gas cell with linearly polarized light serving as pump light and probe light in a Z axis direction, and a magnetic field generator applies, to the gas cell, a magnetic field Ax which is a time function f(t) having the amplitude A0 taking n fixed values fi (where i=1, . . . , and n), and a magnetic field Ay which is a time function g(t) having the amplitude A0 taking m fixed values gj (where j=1, . . . , and m) in each of X axis and Y axis directions. A calculation controller calculates a magnetic field C (Cx, Cy, Cz) of a measurement region using the X axis and Y axis components Ax and Ay of an artificial magnetic field A, and a spin polarization degree Mx corresponding to a measurement value W? from a magnetic sensor.

Abstract: In a magnetic field measurement apparatus, a light source irradiates a gas cell with linearly polarized light serving as pump light and probe light in a Z axis direction, and a magnetic field generator applies, to the gas cell, a magnetic field Ax which is a time function f(t) having the amplitude A0 taking n fixed values fi (where i=1, . . . , and n), and a magnetic field Ay which is a time function g(t) having the amplitude A0 taking m fixed values gj (where j=1, . . . , and m) in each of X axis and Y axis directions. A calculation controller calculates a magnetic field C (Cx, Cy, Cz) of a measurement region using the X axis and Y axis components Ax and Ay of an artificial magnetic field A, and a spin polarization degree Mx corresponding to a measurement value W? from a magnetic sensor.

Abstract: A magnetism measuring device includes: a wall forming a cell portion; an opening which is open to a portion of the wall; a sealing material which seals the opening; a coating layer which covers the sealing material on an inside of the cell portion; and an alkali metal gas which is sealed in the cell portion.

Abstract: A method for manufacturing a magnetism measurement device which measures a magnetic field generated from a living body, includes: arranging an ampoule made of borosilicate glass and having a hollow part filled with a solid alkali metal, in a void in a cell section made of quartz glass, and then sealing the cell section; and casting a pulse laser beam on the ampoule through the cell section and thus forming a penetration hole in the ampoule. The pulse laser beam has an energy of 20 ?J/pulse to 200 ?J/pulse. The absorption coefficient of quarts glass for the pulse laser beam is lower than the absorption coefficient of borosilicate glass for the pulse laser beam.

Abstract: A gas cell sealing method includes bonding step in which a bonding portion of a gas cell main body having an opening and a lid for closing the opening where a sealant for bonding the gas cell main body and the lid is provided is heated by converging a laser beam from a laser light source through an optical element, and the lid is bonded to the gas cell main body by applying pressure in a direction that presses the lid against the gas cell main body, the pressure being applied while the laser beam is being converged to the bonding portion.

Abstract: A magnetism measurement apparatus that measures a magnetic field includes a gas cell including a primary chamber, a reservoir, and a exhaust hole that allows the primary chamber and the reservoir to communicate with each other. The primary chamber and the reservoir are filled with an alkali metal gas, and at least one of an alkali metal solid and an alkali metal liquid is placed in the reservoir.

Abstract: In a magnetic field measurement apparatus, a light source irradiates a gas cell with linearly polarized light serving as pump light and probe light in a Z axis direction, and a magnetic field generator applies alternating magnetic fields which have the same cycle and different phases to the gas cell in each of X axis and Y axis directions. A calculation controller calculates a magnetic field C (Cx, Cy, Cz) of a measurement region using X axis and Y axis components Ax and Ay of the alternating magnetic fields, and a spin polarization degree Mx corresponding to a measurement value W? from a magnetic sensor.

Abstract: A gas cell includes a cell main body having a first chamber defined by an inner wall, and a first paraffin film provided on the inner wall, wherein in the first chamber, a gas which interacts with an electromagnetic wave is stored, the first paraffin film is a pure paraffin film, and a paraffin constituting the first paraffin film is arranged such that the directions of the molecular axes are aligned.

Abstract: A magnetic sensor includes a light flux emitting unit, a first cell onto which a light flux, which propagates in a first direction, is incident and that accommodates a medium which changes optical characteristics of the light flux depending on a magnitude of a magnetic field, a first light flux bender that bends some of the plurality of light fluxes in a second direction different from the first direction, a second cell onto which the light flux, which is bent in the second direction in the first light flux bender, is incident and that accommodates a medium which changes optical characteristics of the light flux depending on the magnitude of the magnetic field, a first light detection element that detects optical characteristics of the light flux emitted from the first cell, and a second light detection element that detects optical characteristics of the light flux emitted from the second cell.

Abstract: A light source unit irradiates a gas cell disposed in a measurement region with linearly polarized light in which the direction of travel is a z-axis direction and the vibration direction of an electric field is a y-axis direction. A polarimeter detects optical characteristics of light passing through the gas cell. A magnetic field generator applies an artificial magnetic field, capable of varying an x-axis component, a y-axis component, and a z-axis component, to the measurement region. A calculation control unit generates a plurality of artificial magnetic fields, calculates a magnetization value or a value corresponding to the magnetization value on the basis of the detection results of the polarimeter, and calculates an original magnetic field present in the measurement region, using an artificial magnetic field when the magnetization value or the value corresponding to the magnetization value satisfies a condition for external value.

Abstract: A gas cell includes a cell having a principal chamber having a coating material film formed on an inside wall, a reservoir arranged with the principal chamber along the longitudinal direction and communicating with to the principal chamber, a reinforcement section extending from the reservoir side of the principal chamber in an X-axis direction along the reservoir, an opening section disposed on an opposite side of the reservoir to the principal chamber, and a sealing section adapted to block the opening section, and an alkali metal gas encapsulated in the principal chamber, and the reinforcement section is provided with one of at least one hole and at least one groove.