Abstract: The invention relates to a device for generating temporally spaced light pulses. Said device comprises a first light source which emits a first train of light pulses, a second light source which emits a second train of light pulses, and a phase-locked loop which regulates the relative phase of the light-pulse trains towards a target value. When the two light-pulse trains each pass through an optical transmission path to an application site that is spatially remote from the light sources, fluctuating phase differences in the light-pulse trains at the application site occur due to external influences along the transmission paths. The object of the invention is to provide an improved device for generating temporally spaced light pulses. In particular, the above-mentioned fluctuating phase differences are intended to be prevented.

Abstract: The invention relates to a device for generating temporally spaced light pulses. Said device comprises a first light source which emits a first train of light pulses, a second light source which emits a second train of light pulses, and a phase-locked loop which regulates the relative phase of the light-pulse trains towards a target value. When the two light-pulse trains each pass through an optical transmission path to an application site that is spatially remote from the light sources, fluctuating phase differences in the light-pulse trains at the application site occur due to external influences along the transmission paths. The object of the invention is to provide an improved device for generating temporally spaced light pulses. In particular, the above-mentioned fluctuating phase differences are intended to be prevented.

Abstract: The invention relates to an apparatus for generating temporally spaced apart light pulses, comprising a first laser (11) which generates a first sequence (I) of light pulses at a first repetition rate, a second laser (12) which generates a second sequence (II) of light pulses at a second repetition rate, and at least one actuating member which influences the first repetition rate and/or the second repetition rate. It is an object of the invention to provide an apparatus for generating temporally spaced apart light pulses which is improved in relation to the prior art.

Abstract: A device for generating temporally distant light pulses is provided, the device including at least a first light source for generating a first sequence of light pulses at a first repetition rate, and a second light source for generating a second sequence of light pulses at a second repetition rate. In some embodiments the device includes at least one actuator element which influences the first and/or the second repetition rate, and a control element which charges the actuator element with a periodical modulation signal for periodical variation of the first and/or second repetition rate. A control circuit is also provided including at least a phase detector, a corrective element, a control element, and a superposition element that forms an actuator signal from a modulation signal and an output signal of the control element, and which charges the actuator element with the actuator signal.

Abstract: The invention relates to an apparatus for generating temporally spaced apart light pulses, comprising a first laser (11) which generates a first sequence (I) of light pulses at a first repetition rate, a second laser (12) which generates a second sequence (II) of light pulses at a second repetition rate, and at least one actuating member which influences the first repetition rate and/or the second repetition rate. It is an object of the invention to provide an apparatus for generating temporally spaced apart light pulses which is improved in relation to the prior art.

Abstract: The present invention relates to a terahertz system for generating and time-resolved incoherent detecting of THz radiation, said system comprising a pulse laser light source (1) emitting laser pulses with a pulse duration of up to 1 ps at a repetition frequency of at least 1 MHz, a first THz antenna serving as sender (3) which is optically coupled to the laser light source (1) and converts the laser pulses into THz pulses with a pulse duration of up to 10 ps, and a second THz antenna serving as receiver (5). It is the object of the present invention to provide an improved terahertz system. As compared with the state of the art, it is above all intended to allow for a faster incoherent measurement of THz radiation. To this end, the present invention proposes to couple the second THz antenna to a detector circuitry whose bandwidth is at least equivalent to the repetition frequency of the laser light source.

Abstract: The invention relates to a device for generating temporally distant light pulses, said device comprising a first light source (51) generating a first sequence (I) of light pulses at a first repetition rate, and a second light source (52) generating a second sequence (II) of light pulses at a second repetition rate. It is the object of the present invention to provide an improved device for generating temporally distant light pulses. This object is inventively achieved by providing for at least one actuator element which influences the first and/or the second repetition rate, and a control element (61) which charges the actuator element with a periodical modulation signal (62) for periodical variation of the first and/or second repetition rate.