Abstract: A semiconductor laser (1) is provided that includes a semiconductor layer sequence in which an active zone for generating laser radiation is located. A ridge waveguide is formed as an elevation from the semiconductor layer sequence. An electrical contact layer is located directly on the ridge waveguide. A metallic electrical connection region is located directly on the contact layer and is configured for external electrical connection of the semiconductor laser. A metallic breakage coating extends directly to facets of the semiconductor layer sequence and is arranged on the ridge waveguide. The breakage coating is electrically functionless and includes comprises a lower speed of sound for a breaking wave than the semiconductor layer sequence in the region of the ridge waveguide.

Abstract: A diode laser arrangement for the cooling of and supply of electrical current to diode laser devices, having at least two stacks, each having a diode laser device which is configured to emit a laser beam, an upper cooling device, and a lower cooling device. The diode laser device is arranged on the upper cooling device and on the lower cooling device such that the diode laser device is arranged between the upper cooling device and the lower cooling device. The upper and lower cooling devices are in each case electrically connected to the diode laser device arranged therebetween. The upper cooling device and/or the lower cooling device of a stack are in each case formed as a microchannel cooler. The upper cooling device and/or the lower cooling device of a stack in each case have substantially no electrical insulation with respect to the diode laser device arranged therebetween.

Abstract: A system and method for providing laser diodes with broad spectrum is described. GaN-based laser diodes with broad or multi-peaked spectral output operating are obtained in various configurations by having a single laser diode device generating multiple-peak spectral outputs, operate in superluminescene mode, or by use of an RF source and/or a feedback signal. In some other embodiments, multi-peak outputs are achieved by having multiple laser devices output different lasers at different wavelengths.

Abstract: An inflatable pool and a method for manufacturing the same are provided. An inner wall of the inflatable pool is provided with at least two inner wall joints each extending along a direction perpendicular to a pool base. After the inflatable pool is inflated, a corner is formed on the inner wall at a position of each of the inner wall joints; an outer wall is provided with at least one outer wall joint extending along the direction perpendicular to the pool base. According to the inflatable pool of the present application, the at least two inner wall joints and the at least one outer wall joint are provided on the inner wall and the outer wall respectively, which is easy for forming the corner on the inner wall after inflation, to form the polygon-shaped inflated pool, thus air leakage hardly occurs.

Abstract: Low phase noise signal generated in a small structure is required for communication and high-resolution imaging. A DBR based multi-mode laser is combined with mode-locking method to build frequency stabilized and tunable RF signal generator. The number of the output modes from each laser is adjusted using reflecting bandwidth of distributed Bragg reflector and electro-absorption (EA) modulator for amplitude control, while the phase section in integrated laser system provides frequency tuning. Mode-locking of 60 laser modes results in a highly frequency stable 10 GHz RF beat-notes with a calculated phase noise of ?150 dBc/Hz at 10 kHz offset frequency.

Abstract: The present invention is characterized by comprising: forming a stacked structure in which a lower cladding layer, an active layer and an upper cladding layer are stacked on an InP substrate in a shape having a mesa stripe structure; forming a first insulation film on the stacked structure by a sputtering method; forming a second insulation film thinner than the first insulation film, on the first insulation film by a plasma CVD method at a film forming temperature higher than that when the first insulation film has been formed; and forming a first electrode on the upper cladding layer, and forming a second electrode on a back surface of the InP substrate.

Abstract: In some implementations, an electrical drive circuit may generate a rectangular optical pulse using cathode pre-charge and cathode-pull compensation. The electrical drive circuit may include an anode and a cathode to connect an optical load, a switch, a first source connected between the anode and a ground, a rectifier connected between the cathode and the switch, a capacitor connected in parallel with the rectifier, a second source connected to the ground, and an inductor connected between the switch and the second source. In some implementations, when the switch is closed and the optical load is connected, a first current is provided to the optical load through the first source, the rectifier, and the switch, and a second current is provided to the optical load through the first source, the capacitor, and the switch, where a rise time of the first current complements a fall time of the second current.

Abstract: A modular swimming pool includes a precast base unit and a precast riser unit that can be assembled at an installation site to define an interior volume in which a human can swim. The precast riser unit is secured to the base unit. The upper surface of the precast base unit and at least one internal surface of the precast riser unit define the interior volume of the modular pool when the precast base unit and the precast riser unit are secured together. A modular swimming pool assembly is also provided. A method of assembling a modular swimming pool is also provided.

Abstract: An apparatus may include an energy rate limiter, an electro-optical transmitter, and an energy monitor. The energy rate limiter limits energy transfer, based on an energy control signal, from a power supply to the energy storage module. The energy storage module is charged based on the energy transfer from the power supply. The electro-optical transmitter includes lasers coupled to local energy storage module. Laser firings of the lasers are based on an electrical potential of the energy storage module and laser enable signals corresponding to the lasers. The energy monitor is coupled to the energy storage module and triggers a safety alarm signal if a voltage provided by the energy storage module violates a safety condition related to a threshold voltage. The energy rate limiter terminates the energy transfer from the power supply to the local energy storage module after the safety condition is violated.

Abstract: A packaged electronic device structure includes a substrate having a major surface. A semiconductor device is connected to the major surface of the substrate, the semiconductor device having a first major surface, a second major surface opposite to the first major surface, and a side surface extending between the first major surface and the second major surface. A package body encapsulates a portion of the semiconductor device, wherein the side surface of the semiconductor device is exposed through a side surface of the package body. In some examples, the side surface of the semiconductor device is an active surface. In some examples, the package body comprises a molded structure that contacts and overlaps the first major surface of the semiconductor device.

Abstract: In an example, the present invention provides a high intensity pulse laser generation system. The system has a variety of elements. The system has an optical cavity maintained in a vacuum, e.g., 300 Torr and less. In an example, the optical cavity is configured to increase an intensity of a laser beam comprising a pulse from a first energy power intensity to a second higher energy power intensity propagating on a first optical path configured within the optical cavity by circulating or reciprocating at least a portion of the laser beam.

Abstract: A semiconductor laser beam combining device includes at least two modular laser input equipments, a second diffraction grating, and an output coupler. The modular laser input equipment includes a semiconductor laser, a beam shaping component, a transformation lens, and a first diffraction grating arranged along an optical path in sequence. The semiconductor laser generates a beam. The semiconductor laser is located at a front focal point of the transformation lens. The first diffraction grating is located in front of a back focal point of the transformation lens. Each beam is gathered by the transformation lens and diffracted by the first diffraction grating to the second diffraction grating. Each beam is combined at an identical position and an identical diffraction angle on the second diffraction grating to generate a combined beam. The combined beam from the second diffraction grating enters the output coupler vertically and is outputted by the output coupler.

Abstract: A liquid dosing apparatus for dispensing a liquid from a container into a liquid stream of a shower, toilet, or tap includes an adapter, a dosing mechanism, a damping control system, and a dispensing outlet. The adapter is arranged to detachable receive the container. The dosing mechanism includes a dosing chamber and a movable member. The dosing mechanism is arranged to draw a set volume of the liquid into the dosing chamber on activation by moving the moveable member in a first direction. The damping control system is arranged to control a dispensing rate of the set volume of the liquid by controlling return speed of the moveable member. The damping control system is arranged to allow and control adjustment of the dispensing rate. The dispensing outlet is arranged to dispense the liquid into the water stream at the controlled dispensing rate.

Abstract: A bathtub/shower arrangement (1) having a bathtub (2), a bathtub inlet (3), a shower head (4) and a switchover valve (5), by way of which switchover valve a water flow (6) is able to be switched between the bathtub inlet (3) and the shower head (4). The bathtub inlet (3) is arranged above the bathtub (2) at a first distance (7) from an upper edge (9) of the bathtub (2), and the shower head (4) is arranged at a second distance (8) above the bathtub (2) from the upper edge (9) of the bathtub (2), at least the first distance (7) is greater than the height (11) of a side wall (10) of the bathtub (2).

Abstract: A portable toilet requires no water supply and is configured to allow solid waste collection by an upper solid waste chamber having a solid waste tray slidingly disposed within the upper waste chamber. A disposable matting member is placed within the solid waste tray to collect solid waste. Liquid waste percolates through the solid waste tray and the disposable matting member into a liquid waste chamber disposed beneath the solid waste tray.

Abstract: The present disclosure relates to a driver circuit for an optical light emitter of a ranging device, the driver circuit comprising: an inductor having a first of its nodes coupled to a current driver; a first branch comprising a first switch coupled between the second node of the inductor and a first supply voltage rail; a second branch for conducting a current through the optical light emitter, the second branch being coupled between the second node of the inductor and the first supply voltage rail; and a current sensor configured to detect the current passing through the inductor and to provide a feedback signal to the current driver.

Abstract: A fluid flow control unit adapted to control flow of fluid from a tap is disclosed. The fluid flow control unit comprises a vertical piece (101) extending along the length of the tap; and a horizontal piece (102) extending along a handle of the tap, wherein the vertical piece (101) and the horizontal piece (102) are sheet structures attached together at a predetermined angle, wherein one of sides (101a) of the vertical piece (101) is attached to one of sides (102a) of horizontal piece, and wherein a point of attachment of the vertical piece (101) and the horizontal piece is above the handle (105) of the tap.

Abstract: The invention relates to a semiconductor laser including a carrier, an edge-emitting laser diode which is arranged on the carrier and which has an active zone for generating laser radiation and a facet with a radiation exit area, an optical element which covers the facet, a connecting material which is arranged between the optical element and the facet, a molded body which covers the laser diode and the optical element at least in places, wherein the optical element is at least partially transparent to the laser radiation emitted by the laser diode during operation, and the optical element is designed to change the main propagation direction of the laser radiation entering the optical element during operation.

Abstract: An optoelectronic component includes a layer structure including an active zone that generates electromagnetic radiation and is arranged in a plane, wherein the layer structure includes a top side and four side faces, first and third side faces are arranged opposite one another, second and fourth side faces are arranged opposite one another, a strip-shaped ridge structure is arranged on the top side of the layer structure and extends between the first side face and the third side face, the first side face constitutes an emission face for electromagnetic radiation, wherein a first recess is introduced into the top side of the layer structure laterally alongside the ridge structure, a second recess is introduced into the first recess, the second recess extends as far as the second side face, and at least one third recess is introduced into a base face of the first recess laterally alongside the ridge structure.

Abstract: An automatic toilet cleaning device for placement inside a cistern of a flush toilet. The device comprises at least a first and second chamber, the second chamber storing a cleaner concentrate, the first chamber formed as a tapered vault. The second chamber having a first end communicative with the first chamber and a second end enclosed by a first barrier defining a gap; a pipe extending from and sealing the gap in the first barrier forming a water channel and a buoyant actuator coupled by a tether to a stopper, the tether disposed in the water channel. In use, as the water levels in the cistern fall and rise, a dosed amount of cleaning solution is released into the cistern.