Abstract: The invention relates to an optical system comprising: a laser source which generates pulsed laser radiation consisting of a temporal sequence of laser pulses; and at least one pulse compression device which is located in the beam path and has a non-linear medium, wherein the laser pulses undergo non-linear spectral broadening during propagation through the medium, and a chirp is applied to the laser pulses. The aim of the invention is to provide an optical system which makes it possible to generate non-linearly compressed laser pulses with improved temporal pulse contrast or with improved pulse quality. According to the disclosed approach, a group delay dispersion which varies along the beam path and which compensates at least partially for the chirp is applied to the laser pulses by the pulse compression device.

Abstract: A method for detecting a user input based on a gesture in which image data of at least two individual images are acquired and recoding times are allocated to the individual images. Each of the acquired individual images is segmented, an individual image object is identified in each of the individual images and a reference point is determined based on the individual image object. A trajectory is determined based on the reference points in the individual images and a gesture is determined based on the trajectory. An output signal is generated and output based on the gesture determined. A device for detecting a user input based on a gesture having an acquisition unit for acquiring image data, a segmentation unit for performing segmentation, a trajectory computing unit for determining the trajectory, an allocation unit for determining a gesture and an output unit.

Abstract: A method which includes detecting a user input based on a gesture, acquiring image data and performing segmentation based on the acquired image data, and determining an object with an outline. A reference point is determined based on the object, a distance between each of a number of points located on the outline of the object and the reference point is determined and a measured distance profile is generated based on these distances. A gesture is determined based on the measured distance profile and an output signal is generated and output based on the gesture determined. A device for detecting a user input based on a gesture including an acquisition unit, a segmentation unit, a profile computing unit, an allocation unit, and an output unit (8).

Abstract: A method which includes detecting a user input based on a gesture, acquiring image data and performing segmentation based on the acquired image data, and determining an object with an outline. A reference point is determined based on the object, a distance between each of a number of points located on the outline of the object and the reference point is determined and a measured distance profile is generated based on these distances. A gesture is determined based on the measured distance profile and an output signal is generated and output based on the gesture determined. A device for detecting a user input based on a gesture including an acquisition unit, a segmentation unit, a profile computing unit, an allocation unit, and an output unit (8).

Abstract: A method for detecting a user input based on a gesture in which image data of at least two individual images are acquired and recoding times are allocated to the individual images. Each of the acquired individual images is segmented, an individual image object is identified in each of the individual images and a reference point is determined based on the individual image object. A trajectory is determined based on the reference points in the individual images and a gesture is determined based on the trajectory. An output signal is generated and output based on the gesture determined. A device for detecting a user input based on a gesture having an acquisition unit for acquiring image data, a segmentation unit for performing segmentation, a trajectory computing unit for determining the trajectory, an allocation unit for determining a gesture and an output unit.

Abstract: The invention relates to an optical waveguide with at least one core region (1) extending along the longitudinal extent of the optical waveguide, and with a first jacket (2) which, viewed in the cross section of the optical waveguide, surrounds the core region (1). The invention further relates to an optical arrangement with such an optical waveguide, and to a method for producing the optical waveguide. The object of the invention is to make available an optical waveguide for high-performance operation, which is improved in relation to the prior art in terms of mode instability. The invention achieves this object by virtue of the fact that the optical waveguide consists of crystalline material at least in the core region (1).

Abstract: The invention relates to an optical waveguide with at least one core region (1) extending along the longitudinal extent of the optical waveguide, and with a first jacket (2) which, viewed in the cross section of the optical waveguide, surrounds the core region (1). The invention further relates to an optical arrangement with such an optical waveguide, and to a method for producing the optical waveguide. The object of the invention is to make available an optical waveguide for high-performance operation, which is improved in relation to the prior art in terms of mode instability. The invention achieves this object by virtue of the fact that the optical waveguide consists of crystalline material at least in the core region (1).