摘要:
An optically pumped, radiation-emitting semiconductor device having a semiconductor body which includes at least one pump radiation source (20) and a surface-emitting quantum well structure (11), the pump radiation source (20) and the quantum well structure (11) being monolithically integrated. The pump radiation source (20) generates pump radiation (2) for optically pumping the quantum well structure (11), a recess (10) for introducing the pump radiation (2) in the quantum well structure (9) being formed in the semiconductor body between the pump radiation source (20) and the quantum well structure (11).
摘要:
A semiconductor laser has a semiconductor body with first and second main areas, preferably each provided with a contact area, and also first and second mirror areas. An active layer and a current-carrying layer are formed between the main areas. The current-carrying layer has at least one strip-type resistance region, which runs transversely with respect to the resonator axis and whose sheet resistivity is increased at least in partial regions compared with the regions of the current-carrying layer that adjoin the resistance region.
摘要:
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.
摘要:
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.
摘要:
The present invention relates to an arrangement of semiconductor diode lasers stacked on top of one another, which is arranged on a substrate (1). A first diode laser (12) is arranged on the substrate (1), and a second diode laser (13) is arranged on the first diode laser (12). Between the first diode laser (12) and the second diode laser (13) there is a contact layer (6). The contact layer (6) comprises a first conductive layer (18) of a first conduction type and a second conductive layer (20) of a second conduction type and an interlayer (19) which is arranged between the first and second conductive layers (18, 20).
摘要:
A laser arrangement comprises an optically pumped laser (2) and at least one semiconductor laser (1) which emits pump radiation (6) for pumping the optically pumped laser (2). The semiconductor laser (1) contains a plurality of monolithically integrated active zones (3, 4, 5) arranged one above another, at least two of the plurality of active zones (3, 4, 5) emitting pump radiation (6) of different wavelengths. In this way, it is possible to pump different absorption bands of the optically pumped laser (2) using a single semiconductor laser (1).
摘要:
A laser device having a semiconductor body (1), which has a plurality of active layers (5, 9) arranged vertically one above the other and serving for generating laser radiation. The active layers are subdivided in the transverse direction into a plurality of emission zones (15) and are electrically connected in series in the vertical direction. The semiconductor body (1) is formed in monolithic integrated fashion, and a cooling element (2) is provided on which the semiconductor body (1) is arranged.
摘要:
A radiation emitter component, in particular an infrared emitter component with a conventional light-emitting diode housing, includes two electrode connections, one of which has a well-shaped reflector. The housing has an optically transparent, electrically non-conducting encapsulation material. A semiconductor laser chip is fastened in a well-shaped reflector of the light-emitting diode housing. The semiconductor laser chip has a quantum well structure, in particular with a strained layer structure, for example MOVPE epitaxial layers with a layer sequence GaAlAs-InGaAs-GaAlAs. A diffusor material can be inserted into the optically transparent, electrically non-conducting material of the light-emitting diode housing. The diffusor material is constructed or inserted with regard to type and concentration in such a way that in connection with the semiconductor laser chip encapsulated in the light-emitting diode housing, a radiation characteristic curve or an increase of an effective emission surface is produced that is comparable to that of a conventional infrared light-emitting diode.
摘要:
An edge emitting semiconductor laser containing a plurality of monolithically integrated laser diodes (1, 2, 3). Each laser diode (1, 2, 3) contains an active zone (11, 12, 13), with the active zones (11, 12, 13) being in each case arranged between waveguide layers (6), the waveguide layers (6) in each case adjoining a cladding layer (7, 8) at a side remote from the active zone (11, 12, 13). The cladding layers (7, 8) comprise inner cladding layers (7), which are arranged above a bottommost active zone (11) and below a topmost active zone (13), and outer cladding layers (8) which are arranged below the bottommost active zone (11) or above the topmost active zone (13). The inner cladding layers (7) have a smaller thickness than the outer cladding layers (8).
摘要:
The present invention relates to an arrangement of semiconductor diode lasers stacked on top of one another, which is arranged on a substrate (1). A first diode laser (12) is arranged on the substrate (1), and a second diode laser (13) is arranged on the first diode laser (12). Between the first diode laser (12) and the second diode laser (13) there is a contact layer (6). The contact layer (6) comprises a first conductive layer (18) of a first conduction type and a second conductive layer (20) of a second conduction type and an interlayer (19) which is arranged between the first and second conductive layers (18, 20).