Abstract: A method for operating a laser device which has a laser-active solid and a preferably passive Q-switch in which the laser device is acted upon by pumped light for generating a laser pulse. The radiation spontaneously emitted by the laser device is analyzed for drawing a conclusion about an operating state of the laser device, in particular about a laser pulse being generated.

Abstract: In a method for operating a laser device, which has a laser-active solid having a passive Q-switch, the laser device is acted upon using pumping light in such a way that a specifiable curve over time of the inversion density comes about in the laser-active solid, as a result of which an especially precise control of the time behavior is achieved during the generation of passively Q-switched laser pulses.

Abstract: A laser spark plug for an internal combustion engine has a laser device including a plurality of surface emitting semiconductor lasers for generating laser pulses.

Abstract: A laser ignition device for an internal combustion engine, having a laser device, which has a laser-active solid body and a passive Q-switch, and having a pump light source for optically pumping the laser device. The pump light source has a plurality of surface-emitting semiconductor lasers.

Abstract: A method for manufacturing a laser-active solid having a bonded passive Q-switch is provided. A plane-parallel first wafer plate may be manufactured from a laser-active material. A second plane-parallel wafer plate may be manufactured from a material that is suitable as a passive Q-switch. The first wafer plate and the second wafer plate may be bonded to form a wafer block, which may then be coated on both end faces with a resonator mirror. Subsequently, the wafer block may be separated into multiple passively Q-switched solid state lasers.

Abstract: A laser device for a laser ignition system of an internal combustion engine includes a laser-active solid, an optical Q-switch, a first resonator in which at least the laser-active solid is situated, and a second resonator optically coupled to the first resonator. The length of the second resonator is set or modulated via actuators to optimize the ignition.

Abstract: In a method for operating an ignition device for an internal combustion engine, in particular of a motor vehicle, having a laser device which includes a laser-active solid having a passive Q-switching system as well as an optical amplifier connected downstream from the passive Q-switching system (46), the laser device generates a laser pulse for radiating into a combustion chamber, and the ignition device having a pump light source which provides a pump light for the laser-active solid and the optical amplifier (70) of the laser device. The energy of the laser pulse is controlled by varying a wavelength of the pump light.

Abstract: A laser device for a laser ignition system for an internal combustion engine, in particular of a motor vehicle or a stationary engine, including a laser oscillator, the laser oscillator having a first laser-active solid, an optical Q-switch, and an output mirror which is partially reflective for a light to be generated by the laser device, in which the laser oscillator has another mirror which is partially reflective for the light to be generated by the laser device.

Abstract: An ignition laser includes a laser-active solid body, a housing, and a combustion chamber window. The heat value of the ignition laser is settable in accordance with the requirements of the internal combustion engine.

Abstract: A device is provided for igniting a fuel-air mixture in a combustion chamber of an internal combustion engine with the aid of electromagnetic radiation, in particular light. The device includes at least two laser radiation sources, each having an optical resonator. The resonators are spatially oriented with respect to one another in such a way that modes of the laser radiation sources are coupled to one another and are able to generate time-shifted pulses of the electromagnetic radiation.

Abstract: A spark plug for an internal combustion engine having a light guide device for supplying the spark plug with optical radiant power. A sensor arrangement is at least partially integrated into the spark plug but disposed outside the light guide device, and is embodied for the acquisition of operating data of the spark plug and/or of a combustion chamber associated with the spark plug.

Abstract: A laser system for an ignition device of an internal combustion engine, in particular of a motor vehicle, having a first laser device and a second laser device situated downstream from the first laser device and optically connected to it, the first laser device being designed for generating pump light for optically pumping the second laser device. The first laser device has a reflecting means in an area which is optically connected to the second laser device, the reflecting arrangement being designed for reflecting radiation generated by the second laser device.

Abstract: In a method for operating a laser device, which has a laser-active solid having a passive Q-switch, the laser device is acted upon using pumping light in such a way that a specifiable curve over time of the inversion density comes about in the laser-active solid, as a result of which an especially precise control of the time behavior is achieved during the generation of passively Q-switched laser pulses.

Abstract: A method is for operating a pump light source having a diode laser, which provides a pump light, in particular for optical pumping of a laser device. The pump light source is activated in a first mode of operation such that the diode laser assumes a predefinable target temperature, which lies in a range of a maximum of the coefficient of absorption of the laser-active solid of the laser device. In a second mode of operation, following the first mode of operation, the pump light source is activated such that it generates pump light to build up a population inversion in the laser-active solid of the laser device.

Abstract: A method for operating a laser device, which has a laser-active solid-state body including a preferably passive Q switch, in which pumped light is applied to the laser device in order to generate a laser pulse. The laser device and/or an optical link between the laser device and a pumped light source supplying the pumped light is at least partially acted upon by an optical test pulse in order to check the integrity of a/the optical link between the laser device and a pumped light source supplying the pumped light.

Abstract: A method for operating a laser device which has a laser-active solid and a preferably passive Q-switch in which the laser device is acted upon by pumped light for generating a laser pulse. According to the present invention, the pumped volume of the laser device acted upon by a pumped light, in particular of the laser-active solid, is changed.

Abstract: A method for operating a laser device which has a laser-active solid and a preferably passive Q-switch in which the laser device is acted upon by pumped light for generating a laser pulse. The radiation spontaneously emitted by the laser device is analyzed for drawing a conclusion about an operating state of the laser device, in particular about a laser pulse being generated.

Abstract: An optical distributor for the distribution of light, in particular laser light, between at least one optical input and at least one of several optical outputs includes at least one movably disposed light guide and a positioning member for moving the at least one light guide, the movably disposed light guide being movable by the positioning member such that at least one of the optical inputs is connectable via the light guide to at least one of the optical outputs.

Abstract: In a method for operating an ignition device for an internal combustion engine, in particular of a motor vehicle, having a laser device which includes a laser-active solid having a passive Q-switching system as well as an optical amplifier connected downstream from the passive Q-switching system (46), the laser device generates a laser pulse for radiating into a combustion chamber, and the ignition device having a pump light source which provides a pump light for the laser-active solid and the optical amplifier (70) of the laser device. The energy of the laser pulse is controlled by varying a wavelength of the pump light.

Abstract: An ignition device, in particular for an internal combustion engine of a motor vehicle, having a laser device for generating laser pulses, and having an optical fiber device which is at least optically connected to the laser device for supplying the laser device with pumped light. The optical fiber device is configured and situated in the region of the laser device in such a way that radiation incident in the region of the laser device and/or in the region of a combustion chamber associated with the laser device may be injected into the optical fiber device. The disclosed configuration of the optical fiber device advantageously allow the radiation which is injected into the optical fiber device to be analyzed, in particular using a detector which is remotely situated, without having to provide additional, separate optical fiber devices for the radiation to be analyzed, because the radiation to be analyzed may be conducted directly via the same optical fiber that is already used for supplying pumped light.