摘要:
A light switching apparatus includes an optically non-linear etalon, a first optical part for applying a signal light of a linear polarization to the optically non-linear etalon, and a second optical part for applying a control light of a circular polarization or elliptical polarization to the optically non-linear etalon. The control light varies a refractive index of an optically non-linear substance of the optically non-linear etalon to thereby perform a switching operation on the signal light.
摘要:
A semiconductor-laser-pumped solid-state laser apparatus (11) which operates laser oscillation by exciting a solid-state laser medium (1) using a semiconductor laser (2) is described. The semiconductor-laser-pumped solid-state laser apparatus (11) has driving current switching means for switching, in accordance with an external control signal, a driving current between a state in which the driving current not less than an emission threshold value of the semiconductor laser is supplied to the semiconductor laser, and a state in which the driving current smaller than the emission threshold value of the semiconductor laser is supplied to the semiconductor laser. An external control apparatus sends an external control signal to a semiconductor-laser-pumped solid-state laser apparatus even if the laser radiation of the solid-state laser is stopped. Therefore, the electric power consumption of a laser machining system can be reduced and the lifetime of the semiconductor laser can be prolonged.
摘要:
A semiconductor laser device, including an LD array member having a monolithic linear-array configuration and provided with a plurality of emitters, respectively emitting a laser beam, in a parallel arrangement in a single semiconductor crystal. The LD array member includes a main area in which the emitters are disposed in the parallel arrangement, a first inactive area formed outside of the main area, and a second inactive area formed between the emitters disposed side-by-side in the main area. The first inactive area has a dimension larger than the second inactive area, as seen in a direction transverse to the plurality of emitters. The LD array member includes a first facet, in which emitting ends of the emitters are disposed, and a second facet opposite to the first facet; at least one of the first facet and the second facet being covered by a coating material. The LD array member also includes a pair of lateral faces respectively intersecting each of the first and second facets; at least one of the lateral faces being covered at least partially by a coating material.
摘要:
An automatic locking system for vehicles includes an electronic control unit. If it is determined that an electronic key is not located in a communication area of an inside-cabin transmitter, the control unit determines whether or not the electronic key is located nearby. As a result, if the electronic key is determined as being located nearby, followed later by a determination that the electronic key is not located nearby, comparison history is stored in a memory. If it is determined that comparison history is stored in the memory and four entry-and-exit doors are closed, the four entry-and-exit doors are locked.
摘要:
A high-power laser unit capable of accurately correcting laser output from low to rated outputs, even when the laser unit has a laser power monitor which may be affected by environmental factors inside or outside the laser unit, by effectively reducing environmental factors. The laser unit has a laser power monitor for measuring laser output, and a laser controller for correcting the laser output by correcting an amount of excitation energy to a laser power supply so that a measurement value coincides with a laser output command value. The laser unit has a laser output commanding part for generating a laser output command. When it is not necessary to correct the laser output command, the laser output command is converted into an excitation energy command value and sent to the power supply. Otherwise, an output correcting part of the laser controller corrects the laser output command.
摘要:
A gas laser oscillator includes a plurality of discharge tube arrays, each discharge tube array including a plurality of electrical discharge tubes, a support mechanism supporting the plurality of discharge tube arrays, and an optical part optically connecting the plurality of discharge tube arrays. The support mechanism includes a discharge tube linking holder and an elastic member. The elastic member joins the discharge tube linking holder to a first support rod arranged at an upper side as seen in a direction of gravity.
摘要:
A cooling device for a semiconductor component which increases mechanical strength thereof and reduces a pressure loss of coolant. Plate members constituting the cooling device are formed with flow passages such as coolant supply and discharge openings, grooves divided by ridges, and through portions separated by projections or partitions. The ridges, projections, and partitions are joined to a adjacent plate member to increase the joining strength, which is further increased by forming the ridges, projections, and partitions of different plate members at the same positions. In the case of laminating the plate members having surfaces formed with solder layers, a number of minute vacant spaces are formed in those joining faces of the plate members which are not formed with passages, etc., and solder filets are formed over the entire joining faces to increase the joining strength. The grooves and through portions can be formed by chemical etching together with outer shapes of the plate members. A plurality of plate members can be fabricated from a single sheet material at a time.
摘要:
A cooling device of a laser diode array includes a stacking of a plurality of metal plate members formed with a branched groove pattern or apertures acting as a cooling water path, by a chemical etching process.
摘要:
A cooling device of a laser diode array includes a stacking of a plurality of metal plate members formed with a branched groove pattern or apertures acting as a cooling water path, by a chemical etching process.
摘要:
In the travel control method in the mobile robot system including a plurality of mobile robots and the control station for controlling these mobile robot, the control station directs one of a plurality of mobile robots to the destination robot, responding to the direction, searches the route to the destination directed by the control station and sends the result to the control station. The control station which receives this in formation checks if the travel path searched by the mobile robot is already reserved by other mobile robots or not by the reservation table. If not, the control station informs the reserve completion to said mobile robot. The mobile robot which received the information of the reservation completion travels automatically along the travel path which is already reserved. In addition, said control station, when there are other mobile robots which disturb the travel of each mobile robot, directs the robot to wait or to take an alternate route according to the situation, or directs other mobile robots that disturb the travel to halt.