Abstract: There is provided a laser device that is able to reduce management tasks by employing microbubble-containing water in which cooling water contains microbubbles. A semiconductor laser device includes a laser oscillation device that includes the one or more laser cavities and a housing that houses the one or more laser cavities; a cooling unit that is arranged outside the laser oscillation device, and can cool circulated cooling water that is used to cool the laser oscillation device; and a cooling water circulation passage that links the laser oscillation device and the cooling unit to allow the circulated cooling water to circulate therethrough, the circulated cooling water being microbubble-containing water that contains microbubbles having a peak diameter of 100 ?m or less.

Abstract: A soldering system that determines soldering quality of elements relative to a housing at the moment of soldering semiconductor laser elements. A soldering device that performs soldering of a semiconductor laser element to a semiconductor laser module, a robot that conveys the module, a camera, and a control device that controls the robot and camera based on imaging output of the camera. The robot conveys the module and changes the position and posture of the camera. The camera images the module. The control device calculates the position of the semiconductor laser element based on the imaging output, calculates parallelism between the housing of the module and the semiconductor laser element based on the change in light intensity related to the imaging output when changing the relative position between the camera and the subject, and determines the quality of soldering of the semiconductor laser element based on the position and parallelism.

Abstract: To provide a laser oscillator allowing the use of a plastic lens in a semiconductor laser module for a high-output laser oscillator while being unlikely to reduce the efficiency of coupling to an optical fiber even if a laser output changes. A laser oscillator comprises a semiconductor laser module with multiple semiconductor laser elements. The laser oscillator comprises: multiple lenses in a first group provided in the semiconductor laser module for causing laser beams from the semiconductor laser elements to pass through; and a lens in a second group provided in the semiconductor laser module for causing all beams having passed through the multiple lenses in the first group to pass through. The lenses in the first group are plastic lenses. The lens in the second group is a glass lens.

Abstract: A vacuum container of a laser oscillator includes a first sealing member and a second sealing member that are disposed between a tube and an insertion member. The first sealing member is made of a material having a corrosion resistance higher than the second sealing member, the first sealing member is disposed on a vacuum side relative to the second sealing member, the second sealing member is made of a material having a sealing property higher than the first sealing member, and the first sealing member at least partially includes a deformation portion that deforms in such a manner as to enhance a sealing property thereof.

Abstract: Provided is a soldering system that can raise the work efficiency related to the supply of a soldering target and soldering work, while decreasing the oxygen concentration by maintaining high airtightness in a space surrounding the soldering target. A soldering system includes a soldering device and a robot related to the soldering device, in which the soldering device is equipped with a container having an openable lid and accommodating a soldering target, and the robot performs conveying of the soldering target to the soldering device and opening/closing of the lid. In an embodiment of the soldering device, the container is a double structure in which an inner container is accommodated in an outer container, and a first nitrogen supply pipe and second nitrogen supply pipe, which are inert gas supply parts of separate systems, are respectively connected to the inner container and outer container.

Abstract: A laser oscillation device can prevent a laser medium-circulating pipe from expanding. The laser oscillation device includes a resonator part, which has an introduction port, through which a laser medium is introduced, and a discharge port, from which the laser medium is discharged, and which generates a laser beam, a laser medium-circulating pipe having one end connected to the introduction port, and the other end connected to the discharge port, a blower arranged in the laser medium-circulating pipe, to circulate the laser medium so that the laser medium is introduced from the introduction port to the resonator part, and the laser medium introduced to the resonator part is discharged from the discharge port, and a heat-insulating mechanism which is provided in the laser medium-circulating pipe, to block heat conduction between the laser medium flowing through the laser medium-circulating pipe and the laser medium-circulating pipe.

Abstract: A soldering system that determines soldering quality of elements relative to a housing at the moment of soldering semiconductor laser elements. A soldering device that performs soldering of a semiconductor laser element to a semiconductor laser module, a robot that conveys the module, a camera, and a control device that controls the robot and camera based on imaging output of the camera. The robot conveys the module and changes the position and posture of the camera. The camera images the module. The control device calculates the position of the semiconductor laser element based on the imaging output, calculates parallelism between the housing of the module and the semiconductor laser element based on the change in light intensity related to the imaging output when changing the relative position between the camera and the subject, and determines the quality of soldering of the semiconductor laser element based on the position and parallelism.

Abstract: A laser oscillator configured to limit a mode hopping over a long duration. A laser oscillator has an optical resonator including an output coupler and a rear mirror positioned on an optical axis, at least one folding mirror positioned on the optical axis and between the output coupler and the rear mirror, and a discharge tube positioned between the output coupler or the rear mirror and the folding mirror. At least one folding mirror has a toric surface shape, a saddle surface shape or a cylindrical shape, and is configured to rotate about a straight line as a rotation axis, which extends through one point on a surface of the folding mirror and is perpendicular to the surface of the folding mirror.

Abstract: To provide a laser oscillator, in which an LD module is fixed to a cooling plate through insulated fixation that is superior in durability, cost, and workability in an insulated fixation operation. A laser oscillator includes an LD module. The LD module has one or a plurality of LD light source(s), and is placed on a thermally conductive insulating member placed on a cooling plate. The LD module of the laser oscillator is fixed to the cooling plate, via an elastic insulating member fixed to the cooling plate.

Abstract: A laser oscillation device can prevent a laser medium-circulating pipe from expanding. The laser oscillation device includes a resonator part, which has an introduction port, through which a laser medium is introduced, and a discharge port, from which the laser medium is discharged, and which generates a laser beam, a laser medium-circulating pipe having one end connected to the introduction port, and the other end connected to the discharge port, a blower arranged in the laser medium-circulating pipe, to circulate the laser medium so that the laser medium is introduced from the introduction port to the resonator part, and the laser medium introduced to the resonator part is discharged from the discharge port, and a heat-insulating mechanism which is provided in the laser medium-circulating pipe, to block heat conduction between the laser medium flowing through the laser medium-circulating pipe and the laser medium-circulating pipe.

Abstract: A laser oscillator comprises a heat exchanger which cools a gas medium. The heat exchanger includes a cooling part which performs heat exchange between the gas medium and a cooling medium, a tubular member fixed to a frame body, and a foreign matter collection container. The tubular member is disposed so that the gas medium which flows out of the cooling part moves along an outer surface of the tubular member and then changes a proceeding direction to flow into an inlet portion. The foreign matter collection container collects foreign matters which are separated from a flow of the gas medium.

Abstract: A gas laser apparatus includes an actual laser output acquiring unit that acquires a first actual laser output at a predetermined laser output command after passage of a predetermined time from issuing of a first laser gas pressure command and acquires a second actual laser output at the predetermined laser output command after passage of the predetermined time from issuing of a second laser gas pressure command smaller than the first laser gas pressure command and a determining unit that determines whether the composition ratio of a laser gas in a gas container is normal or not by comparing the first actual laser output with a first reference output and comparing the second actual laser output with a second reference output smaller than the first reference output.

Abstract: A laser oscillator comprises a heat exchanger which cools a gas medium. The heat exchanger includes a cooling part which performs heat exchange between the gas medium and a cooling medium, a tubular member fixed to a frame body, and a foreign matter collection container. The tubular member is disposed so that the gas medium which flows out of the cooling part moves along an outer surface of the tubular member and then changes a proceeding direction to flow into an inlet portion. The foreign matter collection container collects foreign matters which are separated from a flow of the gas medium.

Abstract: A gas laser oscillator according to the present invention comprises a resonator unit, a heat exchanger through which a fluid exchanging heat with a laser gas flows, a chiller for cooling the fluid in the heat exchanger and supplying the fluid to the heat exchanger, and a heat transfer device for transferring heat of the fluid to the resonator unit. The gas laser oscillator further comprises a first flow path for supplying the fluid used for cooling the laser gas in the heat exchanger to the heat transfer device, a second flow path for supplying the fluid cooled by the chiller to the heat transfer device prior to supplying the fluid to the heat exchanger, and a switching valve for switching either one of a first flow path and a second flow path.

Abstract: A vacuum container of a laser oscillator includes a first sealing member and a second sealing member that are disposed between a tube and an insertion member. The first sealing member is made of a material having a corrosion resistance higher than the second sealing member, the first sealing member is disposed on a vacuum side relative to the second sealing member, the second sealing member is made of a material having a sealing property higher than the first sealing member, and the first sealing member at least partially includes a deformation portion that deforms in such a manner as to enhance a sealing property thereof.

Abstract: A laser oscillator configured to limit a mode hopping over a long duration. A laser oscillator has an optical resonator including an output coupler and a rear mirror positioned on an optical axis, at least one folding mirror positioned on the optical axis and between the output coupler and the rear mirror, and a discharge tube positioned between the output coupler or the rear mirror and the folding mirror. At least one folding mirror has a toric surface shape, a saddle surface shape or a cylindrical shape, and is configured to rotate about a straight line as a rotation axis, which extends through one point on a surface of the folding mirror and is perpendicular to the surface of the folding mirror.

Abstract: A gas laser oscillator according to the present invention comprises a resonator unit, a heat exchanger through which a fluid exchanging heat with a laser gas flows, a chiller for cooling the fluid in the heat exchanger and supplying the fluid to the heat exchanger, and a heat transfer device for transferring heat of the fluid to the resonator unit. The gas laser oscillator further comprises a first flow path for supplying the fluid used for cooling the laser gas in the heat exchanger to the heat transfer device, a second flow path for supplying the fluid cooled by the chiller to the heat transfer device prior to supplying the fluid to the heat exchanger, and a switching valve for switching either one of a first flow path and a second flow path.

Abstract: A gas laser apparatus includes an actual laser output acquiring unit that acquires a first actual laser output at a predetermined laser output command after passage of a predetermined time from issuing of a first laser gas pressure command and acquires a second actual laser output at the predetermined laser output command after passage of the predetermined time from issuing of a second laser gas pressure command smaller than the first laser gas pressure command and a determining unit that determines whether the composition ratio of a laser gas in a gas container is normal or not by comparing the first actual laser output with a first reference output and comparing the second actual laser output with a second reference output smaller than the first reference output.

Abstract: A laser oscillator which can keep distributions of pressure of a laser medium inside of a plurality of discharge tubes constant while making the laser medium circulate without stagnating. The laser oscillator is comprised of a first discharge tube, second discharge tube, first light guide, laser medium flow path, and blower. A flow resistance of a laser medium flow path between the blower and the first discharge tube and a flow resistance of the laser medium flow path between the blower and second discharge tube are the same as each other. A flow resistance of the laser medium flow path between the blower and a first end of the first light guide and a flow resistance of the laser medium flow path between the blower and a second end of the first light guide differ from each other.

Abstract: A gas laser apparatus includes a supply pipe forming a passage of laser gas supplied to a gas container from outside, a pressure sensor that detects pressure in the supply pipe, a supply control valve that controls an amount of the laser gas supplied to the gas container, and a controller that controls opening and closing of the supply control valve. The controller includes a pressure acquisition unit that acquires a pressure value in the supply pipe, a pressure change calculation unit that calculates a pressure change in the supply pipe based on the pressure values acquired by the pressure acquisition unit a plurality of times in a predetermined period of time while the supply pipe is sealed, and an air-tightness determination unit that determines an air-tightness level of the supply pipe on the basis of the pressure change calculated by the pressure change calculation unit.