Abstract:
PROBLEM TO BE SOLVED: To achieve improved radiation of heat generated by each of laser diodes, and reduced temperature difference in active bands of the laser diodes, at comparatively little manufacturing cost, in an end surface emitting that includes laser diodes 1, 2, and 3 having active bands 11, 12, and 13, respectively, each of which is arranged between waveguide layers 6; a waveguide layer that is brought into contact with coating layers 7 and 8 in the side opposite to the active band; the coating layers including an inside coating layer 7 positioned above the active band 11 located at the lowest position and positioned below the active band 13 located at the uppermost position, and an outside coating layer 8 positioned below the active band located at the lowest position or positioned above the active band located at the uppermost position. SOLUTION: In the end surface emitting semiconductor laser, the inside coating layer (7) is slightly thicker than the outside coating layer (8). COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a sensor system having a detecting device and lighting systems and usable in many fields. SOLUTION: In the sensor system S having the lighting systems 1, 3 and the detecting device D, the lighting systems are constituted to radiate laser beams L11, L12 of first wavelength and laser beams L21, L22 of second wavelength different from the first wavelength, and the detecting device is constituted to detect electromagnetic beams of the first and second wavelength. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an improved laser device which consists of a laser to be optically pumped and a semiconductor laser for optically pumping the laser, wherein the device has improved efficiency in optical pumping; the structure size of the laser device is relatively small; and manufacturing cost is relatively low, and to provide a semiconductor laser advantageous in optically pumping the laser. SOLUTION: In the laser device, the semiconductor laser comprises a plurality of active regions integrated monolithically and arranged in a stack, and at least two or more active regions emit pumping beam of different wavelengths. The semiconductor laser has a plurality of active regions integrated monolithically and arranged in the stack, and at least two or more active regions emit pumping beam of different wavelengths. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a high-power laser apparatus, particularly suitable to an application case of pumping and capable of being manufactured at a technical cost as small as possible. SOLUTION: A semiconductor (1) is integrated into a monolithic structure, where a cooling element (2) is provided, and the semiconductor (1) is provided on the cooling element (2). COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To improve a semiconductor laser device to modulate an output power at a high speed. SOLUTION: A surface emission semiconductor laser device is provided with a perpendicular emitter (20) that can be optically pumped, which is provided with at least one modulation beam source (30) to modulate an output power of the surface emission semiconductor laser device that is a type having a beam formation layer (14). The modulation beam source includes an edge radiation semiconductor structure (15) having an active layer forming a beam, and the modulation beam source is arranged to radiate a beam from the semiconductor laser device during operation. The generated beam is inputted in the active layer (14) for forming the beam of the perpendicular emitter (20) and is joined with it. COPYRIGHT: (C)2004,JPO
Abstract:
The invention relates to an assembly of stacked semiconductor laser diodes, arranged on a substrate (1). A first laser diode (12) is positioned on the substrate (1) and a second laser diode (13) is positioned on top of the first laser diode (12). A contact layer (6) is located between the first laser diode (12) and the second laser diode (13). The contact layer (6) comprises a first conductive layer (18) of a first conductivity type, a second conductive layer (20) of a second conductivity type and an intermediate layer (19), which is located between the first and the second conductive layers (18, 20).
Abstract:
According to the invention, a semiconductor component is produced for the emission of electromagnetic radiation, in particular, light, which is characterised by comprising an active layer for production of radiation, a p contact, electrically connected to the active layer, an n contact, electrically connected to the active layer and a current limiting structure for the definition of a current path, whereby the current limiting structure is provided between the n contact and the active layer.
Abstract:
A sensor system with a lighting device and a detector device is specified. The lighting device is provided for emitting laser radiation of a first wavelength and laser radiation of a second wavelength different from the first. The detector device is provided for detecting electromagnetic radiation of the first and the second wavelength.
Abstract:
The laser has multiple active zones (11, 12, 13), where each zone is arranged between waveguide layers (6). The waveguide layers adjoin multiple cladding layers at a side that is turned away from the zones. The cladding layers exhibit inner cladding layers (7) that are arranged above the lowest active zone (11) and below the top-most active zone (13). The cladding layers exhibit outer cladding layers (8) that are arranged below the lowest active zone and above the top-most active zone, where the inner cladding layers exhibit a small thickness than the outer cladding layers.
Abstract:
The invention relates to a laser diode device with a laser diode chip (4) that is mounted in a housing (1) for a light-emitting diode. Said laser diode chip (4) is structured as a multi-beam laser diode (L1, L2) the terminals of which are linked with the terminal of the LED housing.