Abstract: The invention relates to a laser device comprising a laser source (1), which is configured to emit pulsed laser radiation (2) with a spectrum in the form of a frequency comb having a plurality of equidistant spectral lines, an optical modulator (3), which is configured to shift the frequency of the laser radiation (2), and a control unit (10), which is configured to control the modulator (3) by means of a control signal (6). It is the object of the present invention to demonstrate an improved way, compared to the prior art, of generating an optical frequency comb that is stabilized in terms of the CEO frequency, in which the CE phase is also adjustable. To this end, the invention proposes that the laser radiation (2) emitted by the laser source (1) is stabilized in terms of the carrier-envelope frequency. Furthermore, the invention relates to a method of generating an optical frequency comb.

Abstract: It is an object of the invention to provide a method and a corresponding laser system that are simple and robust and that are able to provide sub-100 fs laser pulses using nonlinear frequency-conversion. The method of the invention comprises the steps of generating pulsed laser radiation at a fundamental wavelength, increasing the spectral bandwidth of the laser radiation by passing the laser radiation through a periodically poled nonlinear crystal material whose poling period is larger than or smaller than the poling period satisfying the quasi-phase-matching condition at the fundamental wavelength, and frequency-converting the spectrally broadened laser radiation.

Abstract: A method for generating stabilized, pulsed laser radiation is disclosed, the method including at least the steps of generating pulsed laser radiation at a repetition frequency, wherein the spectrum of the pulsed laser radiation is a frequency comb having a number of equidistant spectral lines; deriving a first controlled variable from the pulsed laser radiation by means of phase comparison with a high-frequency reference signal; generating narrow-band continuous-wave laser radiation at a reference wavelength; setting the reference wavelength in accordance with a first manipulated variable derived from the first controlled variable; deriving a second controlled variable by means of superposition of the pulsed laser radiation and the continuous-wave laser radiation; and setting the repetition frequency in accordance with a second manipulated variable derived from the second controlled variable. A device for generating stabilized, pulsed laser radiation compatible with the method is also disclosed.

Abstract: A method for reading a demodulation pixel of a distance sensor for determining a distance, in particular for determining the difference between two charge quantities independently of the total magnitude of the charge quantities, and also a distance sensor are proposed. For faster signal processing, provision is made for applying a variable control voltage to the transfer gates for influencing the potential wall, and lowering the respective potential walls of the corresponding transfer gates, before and/or until from the storage gates in each case charge carriers can surmount the respective potential wall of the corresponding transfer gate and pass to the assigned floating diffusion.

Abstract: In order to measure distances precisely, a receiver device for determining a distance from an object is proposed, comprising: a receiver having a semiconductor structure with a photosensitive region for generating photo-induced charge carriers, which region faces the rear side, and having a transportation region, which faces the front side, wherein the photosensitive region and the transportation region are spatially separated from one another by a separation layer which has a passage between the photosensitive region and the transportation region, wherein the transportation region has an arrangement of at least two gates lying one next to the other, at least one of the gates thereof being located in the overlapping region of the passage.

Abstract: The invention relates to a method of generating frequency-tripled laser radiation (THG). It is the object of the invention to demonstrate an efficient approach to generating frequency-tripled laser radiation.

Abstract: A method for generating pulsed laser radiation in the spectral range from 860 nm to 1000 nm is disclosed, including the steps of generating pulsed laser radiation in the spectral range from 1500 nm to 1600 nm, preferably at a wavelength of 1560 nm; shifting the wavelength of the pulsed laser radiation to a longer wavelength of at least 1720 nm, and preferably to 1840 nm; amplifying the wavelength-shifted pulsed laser radiation in a Thulium-doped gain medium so that the Thulium-doped gain medium is pumped in an in-band pumping scheme; and frequency-doubling the amplified wavelength-shifted pulsed laser radiation. A laser system suitable for practicing the method is also disclosed.

Abstract: Spectrometer for recording a spectrum, in particular in a wavelength range of 250 nm to 1150 nm, comprising: a sensor array and a filter array for filtering the radiation depending on the wavelength, wherein, in order to reduce production costs, provision is made of a device for identifying the sensor pixels covered by the filter array, having a nonvolatile memory in which the coordinates of the filter array in relation to the sensor array and/or the coordinate transformation of the filter array in relation to the sensor array are/is stored in order to assign the sensor pixels to the individual filter pixels on the basis of the stored coordinates and/or coordinate transformation and/or in order to activate the individual filter pixels depending on which of the sensor pixels are covered by the corresponding filter pixels.

Abstract: The invention relates to a method of generating frequency-tripled laser radiation (THG). It is the object of the invention to demonstrate an efficient approach to generating frequency-tripled laser radiation.

Abstract: A TOF camera apparatus for transmitting light signals and recording the light that is scattered back at an object and also for determining the distance of the TOF camera apparatus from the object is proposed, wherein the TOF camera apparatus comprises: a transmitter for transmitting light signals, a receiver for detecting the light scattered back at the object, embodied in the form of a pixel matrix having at least one pixel, a modulation device for producing a modulation signal in order to modulate light signals that are to be transmitted by the transmitter, an evaluation device for evaluating the light detected by the receiver, which evaluation device is connected to the modulation device to obtain the modulation signal for evaluating and determining the distance. In order to make possible particularly reliable error detection, a check apparatus for error detection in at least one of the pixels is provided.

Abstract: A laser apparatus including a pulsed laser radiation source is disclosed, wherein the laser radiation has spectral components in at least two wavelength ranges W1, W2 that differ from one another, and a dispersion control element including at least one dielectric multilayer mirror, wherein the laser radiation is reflected one or more times at the multilayer mirror. The multilayer mirror is reflective in the two wavelength ranges W1, W2, and the reflection of the spectral component in the second wavelength range W2 has a time delay relative to the reflection of the spectral component in the first wavelength range W1 such that the spectral components of the laser radiation reflected at the multilayer mirror in the two wavelength ranges W1, W2 coincide in time in an interaction center of the laser apparatus, and a nonlinear optical element is situated in the interaction center.

Abstract: A method for generating stabilized, pulsed laser radiation is disclosed, the method including at least the steps of generating pulsed laser radiation at a repetition frequency, wherein the spectrum of the pulsed laser radiation is a frequency comb having a number of equidistant spectral lines; deriving a first controlled variable from the pulsed laser radiation by means of phase comparison with a high-frequency reference signal; generating narrow-band continuous-wave laser radiation at a reference wavelength; setting the reference wavelength in accordance with a first manipulated variable derived from the first controlled variable; deriving a second controlled variable by means of superposition of the pulsed laser radiation and the continuous-wave laser radiation; and setting the repetition frequency in accordance with a second manipulated variable derived from the second controlled variable. A device for generating stabilized, pulsed laser radiation compatible with the method is also disclosed.

Abstract: The image sensor according to the invention is an image sensor with a matrix of pixels for generating a resulting image with a higher dynamic range from the acquisition of two original images, wherein the pixels of the image sensor are designed as demodulation pixels, wherein each comprises a conversion region for generating charge carriers from the received radiation, a separation device for temporally separating the generated charge carriers into two charge carrier streams, a memory device with two memories for separately storing the charge carriers of the two charge carrier streams, and a read-out device for converting the stored charge carriers into electrical signals, wherein the separation device is designed to carry out the separation of the charge carriers generated in one period into two different time periods.

Abstract: A flexibly usable optoelectronic sensor device for detecting an object, comprising a receiving device for receiving light backscattered after the scattering of an emitted light beam at the object, wherein the receiving device has an array of at least two receiving elements for detecting radiation and a receiving optical unit for imaging the received radiation on the array; the array is divisible and/or divided into at least two array regions, wherein the at least two array regions correspond in each case to scatterings at objects at different distances from the monitoring region and/or different brightnesses of the received radiation, and the receiving elements respectively arranged in different array regions are settable and/or set to detect with mutually different light sensitivities.

Abstract: The invention relates to an apparatus for generating laser pulses by non-linear four-wave mixing. It is an object of the invention to provide a technique which enables the generation of short laser pulses in the wavelength ranges between 800 nm and 1000 nm or between 1100 nm and 1500 nm based on a four-wave mixing process using a rare earth doped femtosecond laser as a pump source. The apparatus of the invention comprises: a pump laser source to emit a pump beam of femtosecond laser pulses at a pump wavelength; a chirp unit to receive the pump beam from the pump laser source and configured to temporally stretch the laser pulses; and a parametric conversion unit to receive the pump beam from the chirp unit and configured to produce a signal beam at a signal wavelength by four-wave mixing in a non-linear optical medium. Moreover, the invention relates to a method for generating laser pulses by non-linear four-wave mixing.

Abstract: A method for reading a demodulation pixel of a distance sensor for determining a distance, in particular for determining the difference between two charge quantities independently of the total magnitude of the charge quantities, and also a distance sensor are proposed. For faster signal processing, provision is made for applying a variable control voltage to the transfer gates for influencing the potential wall, and lowering the respective potential walls of the corresponding transfer gates, before and/or until from the storage gates in each case charge carriers can surmount the respective potential wall of the corresponding transfer gate and pass to the assigned floating diffusion.

Abstract: Spectrometer for recording a spectrum, in particular in a wavelength range of 250 nm to 1150 nm, comprising: a sensor array and a filter array for filtering the radiation depending on the wavelength, wherein, in order to reduce production costs, provision is made of a device for identifying the sensor pixels covered by the filter array, having a nonvolatile memory in which the coordinates of the filter array in relation to the sensor array and/or the coordinate transformation of the filter array in relation to the sensor array are/is stored in order to assign the sensor pixels to the individual filter pixels on the basis of the stored coordinates and/or coordinate transformation and/or in order to activate the individual filter pixels depending on which of the sensor pixels are covered by the corresponding filter pixels.

Abstract: In order to measure distances precisely, a receiver device for determining a distance from an object is proposed, comprising: a receiver having a semiconductor structure with a photosensitive region for generating photo-induced charge carriers, which region faces the rear side, and having a transportation region, which faces the front side, wherein the photosensitive region and the transportation region are spatially separated from one another by a separation layer which has a passage between the photosensitive region and the transportation region, wherein the transportation region has an arrangement of at least two gates lying one next to the other, at least one of the gates thereof being located in the overlapping region of the passage.

Abstract: The invention relates to a method for stabilizing a diode laser with a semiconductor laser diode and an external resonator (ECDL), wherein the external resonator is comprised of at least one angle-dispersive, frequency-selective element and wherein the frequency of the diode laser is essentially determined by the length of the external resonator and by the position of the angle-dispersive, frequency-selective element, and wherein these two frequency-selective elements or one element thereof can be detuned by way of a correction means (10) for harmonization to each other, which is characterized in that the portion of the light reflected from the external resonator with the angle-dispersive, frequency-selective element back to the semiconductor laser diode and not optically coupled into the semiconductor laser diode (designated as “non-optically coupled light”) or part thereof, is measured and that from the relevant measuring values, after comparison with a reference value, a fault signal is generated which as

Abstract: TOF distance sensor for capturing the distance to an object by receiving radiation reflected by the object, said radiation emanating from a radiation source modulated by a modulation frequency, comprising a pixel matrix for recording a pixel image. The pixel matrix consists of demodulation pixels which are designed for rear-side reception of the radiation. The demodulation pixels comprise a conversion region for generating charge carriers from the received radiation, and a separating device for separating the charge carriers in accordance with the modulation frequency, and also a stop for partitioning-off the conversion region from the separating device in relation to the charge carriers, and also an aperture for passing the charge carriers from the conversion region into the separating device. The TOF distance sensor is embodied in such a way that in each case at least two demodulation pixels form a common aperture.