Abstract: A magnetic sensor for measuring a magnetic field using an optical pumping method includes a first gas in which a valence electron is composed of an odd number of atoms or ions, a probe light incidence device which causes first probe light including straight polarized light to be incident on the first gas, a second gas in which a valence electron arranged on an optical path of second probe light that is the first probe light transmitted through the first gas is composed of an odd number of atoms or ions, a pumping light incidence device which causes first pumping light including first circular polarized light to be incident on the first gas and second pumping light including second circular polarized light to be incident on the second gas, and a detector which detects a rotation angle of a polarization plane of the first probe light and a polarization plane of third probe light that is the second probe light transmitted through the second gas.

Abstract: A magnetic shield including a first layer and a second layer and shielding an environmental magnetic field is obtained by manufacturing the first layer that is configured by a first material and that includes a hollow portion on the inside and the second layer that is configured by a second material that is different from the first material and which is a hollow member and placing the second layer in the hollow portion of the first layer. With the magnetic shield, in regions between the first layer and the second layer, a material in which the relative magnetic permeability at the strength of the magnetic field at a region that is next to the second layer is high compared to the relative magnetic permeability of the first material at the strength of the magnetic field is selected as the second material that configures the second layer.

Abstract: A manufacturer of gas cells performs an arrangement process of arranging solid substances at positions corresponding to holes each of which is provided on each of a plurality of cells. Then, the manufacturer of the gas cells performs an accommodation process of accommodating gas in inner spaces of the cells through an air flow path connected to the holes. Further, the manufacturer of the gas cells performs a sealing process of sealing the spaces by melting the solid substances to close the holes corresponding to the solid substances.

Abstract: A production method of a gas cell includes: forming a coating layer on a surface of a plate material; assembling a plurality of the plate materials having the coating layer formed thereon so as to form a cell surrounded by the surface having the coating layer formed thereon; and filling the formed cell with an alkali metal gas.

Abstract: A beam that passes through a plurality of gas cells a number of times is led to a deflection meter from a light ejecting section, detection of a deflected surface angle is performed and a strength of a magnetic field is measured by a structure in which the plurality of the gas cells is arranged along a light beam between two reflection units or light concentrating units that have a light beam incidence section and a light beam ejecting section and are opposite to each other, and a laser beam that is incident from the light beam incidence section passes through the plurality of the gas cells and then is multiply reflected by both reflection units.

Abstract: A magnetic sensor is provided that measures a magnetic field. The sensor includes a first gas, a probe light source which causes first circular polarized light to be incident on the first gas, a second gas arranged on an optical path of a second circular polarized light, an AC magnetic field generator which generates an AC magnetic field and generates magnetic resonance, a bias magnetic field generator which generates bias magnetic fields with different intensities for the first gas and the second gas and differentiates the optical transmittance of the first circular polarized light in the first gas from the optical transmittance of the second circular polarized light in the second gas, and a detector which detects a light amount of the first circular polarized light and a third circular polarized light.

Abstract: A magnetic sensor for measuring a magnetic field using an optical pumping method includes a first gas in which a valence electron is composed of an odd number of atoms or ions, a probe light incidence device which causes first probe light including straight polarized light to be incident on the first gas, a second gas in which a valence electron arranged on an optical path of second probe light that is the first probe light transmitted through the first gas is composed of an odd number of atoms or ions, a pumping light incidence device which causes first pumping light including first circular polarized light to be incident on the first gas and second pumping light including second circular polarized light to be incident on the second gas, and a detector which detects a rotation angle of a polarization plane of the first probe light and a polarization plane of third probe light that is the second probe light transmitted through the second gas.

Abstract: A magnetic sensor that measures a magnetic field by using an optical pumping method, the magnetic sensor including: a cell that encloses therewithin atoms or ions each having a single electron in the outermost shell thereof and that is arranged inside the magnetic field; a light source that causes pulsed first linearly polarized light to be incident upon the cell; a circularly polarized light generator that converts a portion of second linearly polarized light, which is the first linearly polarized light having passed through the cell, into elliptically or circularly polarized light and causes the portion of second linearly polarized light to be incident upon the cell; and a polarimeter that detects an angle of rotation of a first polarization plane, which is polarization plane of the first linearly polarized light, and an angle of rotation of a second polarization plane, which is a polarization plane of the second linearly polarized light.

Abstract: There is provided a light chip and an optical module with high reliability. The light chip 100 according to the present invention is a light chip having a semiconductor laser formed on a first substrate and includes a cavity 18 having an emission surface 22 on the upper surface, a first electrode 24 and a second electrode 26 for driving the semiconductor laser, and a plurality of pad portions 24a, 26a, for flip-chip bonding to a second substrate, respectively connected to the first electrode and the second electrode, wherein the cavity is, seen in a plan view, formed outside a region 25 formed by connecting the outermost peripheries of the plurality of pad portions by straight lines.

Abstract: An optical module includes a light source, a variable transmittance member disposed on a light path of output light from the light source distant from the light source, and a coupling section for coupling the output light from the light source via the variable transmittance member, wherein coupling efficiency as a ratio between intensity of the light from the light source and intensity of light to be coupled to the coupling section rises in conjunction with a rise in temperature.

Abstract: There is provided a light chip and an optical module with high reliability. The light chip 100 according to the present invention is a light chip having a semiconductor laser formed on a first substrate and includes a cavity 18 having an emission surface 22 on the upper surface, a first electrode 24 and a second electrode 26 for driving the semiconductor laser, and a plurality of pad portions 24a, 26a, for flip-chip bonding to a second substrate, respectively connected to the first electrode and the second electrode, wherein the cavity is, seen in a plan view, formed outside a region 25 formed by connecting the outermost peripheries of the plurality of pad portions by straight lines.

Abstract: An optical module package that optically couples an optical device and an optical fiber includes: a first surface on which an optical plug that supports one end of the optical fiber is mounted; a second surface that intersects the first surface at an angle less than 90 degrees; a reflection lens formed in the second surface; and an opening section that is located at a position opposing to the second surface, and between the reflection lens and the optical device.

Abstract: An optical module includes: an optical plug that supports one end of an optical fiber; a receptacle unit that has an optical element and optically couples the optical fiber and the optical element; a holder having a through hole for passing the optical fiber and a housing section that contains the optical plug and at least a portion of the receptacle unit; and a tube that is coupled to the through hole and extends outside of the holder.

Abstract: An optical module includes a light emitting element, a connector part that supports one end of an optical fiber and optically couples the optical fiber to the light emitting element, and a monitoring light receiving element that has a characteristic to increase photosensitivity with an increase in an ambient temperature, and receives a part of components of light emitted from the light emitting element.

Abstract: An optical module: an optical plug that supports one end of an optical fiber and has a first surface that is generally in parallel with an extension direction of the optical fiber at one end side thereof and two second surfaces traversing the first surface; an optical element container that has an optical element and a transparent surface traversing an optical axis of the optical element, and is disposed such that the optical axis of the optical element and an optical axis of the optical fiber cross one another; an optical block having an optical reflection surface disposed at an intersection of the optical axis of the optical element and the optical axis of the optical fiber; and a resin member that includes a first guide surface in contact with one of the two second surfaces of the optical plug and a second guide surface in contact with the transparent surface of the optical container on which the optical plug is mounted.

Abstract: An optical module includes: an optical element; a support member for supporting the optical element; a lid member that seals the optical element with respect to the support member; a sealing member that is provided to bond the lid member with the supporting member; and a case with a lens provided such that the lens is disposed on an optical path of light oscillated by the optical element, wherein the case with the lens is opposed in an optical axis direction of light passing through the lens to and in contact with the supporting member.

Abstract: Minute structures are obtained by exposing a process target material and changing the shape thereof by relatively shifting a laser beam or electron beam against the process target material and simultaneously repeating irradiation in an intermittent manner. A plurality of minute convex or concave shapes are formed on the process target material by employing a branching element for branching a single beam into a plurality of beams; a parallel element for converting said plurality of beams into beams which respectively advance in parallel; and a condensing element for condensing the plurality of beams to the process target material and generating a plurality of minute spots thereon.

Abstract: An optical module includes a light source, a variable transmittance member disposed on a light path of output light from the light source distant from the light source, and a coupling section for coupling the output light from the light source via the variable transmittance member, wherein coupling efficiency as a ratio between intensity of the light from the light source and intensity of light to be coupled to the coupling section rises in conjunction with a rise in temperature.

Abstract: A method for manufacturing an optical module equipped with an optical element includes the steps of: (a) preparing a support member for supporting an optical element; (b) providing a spacer on the supporting member; (c) pressing the spacer to cause a plastic deformation therein; (d) bonding the optical element and the spacer; (e) providing a sealing member on an upper surface of the supporting member; (f) disposing a lid member for sealing the optical element above the sealing member and affixing the lid member to the supporting member; and (g) affixing a case with a lens onto the supporting member, wherein, in the step (g), the case with the lens is affixed to the supporting member such that the lens is disposed on an optical path of light oscillated by the optical element, and the case with the lens is disposed opposite in an optical axis direction of light passing through the lens to and in contact with the supporting member.

Abstract: An optical module includes: an optical plug that supports one end of an optical fiber; a receptacle unit having an optical element and a mounting surface to be abutted against the optical plug for optically coupling the optical plug and the optical element; and a holder having a leaf spring that forces the optical plug to the mounting surface of the receptacle unit, a window section for passing the optical fiber, and a fiber support section disposed at a position near the window section for affixing the optical fiber thereto, wherein the holder is engaged with the receptacle unit to connect the receptacle unit and the optical plug in one piece.