Apparatus for measuring the radiation capacity of lasers
AssigneeFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V.
InventorsPeter Loosen, Volker Sturm, Alexander Drenker
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Abstract
Apparatus for measuring the radiation power of lasers, particularly infrared lasers, with a thermal detector, which supplies a power-caused measurement signal. In order to be able to measure rapid laser radiation power changes, the apparatus is so constructed that there is a device which locally integrates the laser radiation and to which, apart from the thermal detector, is connected at least one further detector, which is able to detect radiation power changes with a larger band width than the band width detectable by the thermal detector and that there is a circuit combining the measurement signals of the detectors.
Claims20
Apparatus for measuring the radiation power of a laser having a thermal detector, which supplies a measurement signal indicative of radiation power, comprising:
- a device which locally integrates the laser radiation and to which is connected at least one further detector, which is able to detect radiation power changes with a larger band width than the band width detectable by the thermal detector and a circuit combining the measurement signals of the detectors.
Apparatus for measuring the radiation power of a laser, comprising:
- a thermal detector, for providing an analog electrical signal indicative of radiation power;
- a second detector, for providing an analog electrical signal indicative of radiation power, wherein the frequency response of said second detector is different than the frequency response of said thermal detector;
- a device for locally integrating the laser radiation;
- and
- a circuit for combining the analog electrical signals to provide a single analog electrical signal indicative of laser radiation power.
Dependencies are inferred from the claim text.