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US 5,121,400 AGranted
Device for coherent addition of laser beams
AssigneeThomson-CSF
InventorsJean-Marc Verdiell, Jean-Pierre Huignard, Henri Rajbenbach
Life of this patent
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Abstract
Device for coherent addition of laser beams including several optical amplifiers in parallel pumped by a beam coming from a master laser. The beams emitted by these amplifiers are transmitted to a non-linear material and play the role of pump beams. The non-linear material also receives a signal beam derived from the master laser. The various beams of the amplifiers are therefore added in the non-linear material along the direction of the signal beam.
Claims9
A device for coherent addition of laser beams, comprising:
- a master laser emitting a master light beam of a determined wavelength;
- a splitting device for receiving the master light beam and dividing it in a plurality of directions;
- a plurality of optical amplifiers or lasers each situated on one of the plurality of directions for receiving part of the divided master light beam and for transmitting a respective slave light beam which is coherent with that of the master beam;
- and
- a device made of a non-linear material which receives a probe beam of wavelength essentially the same as that of the master beam and each of the respective slave light beams, wherein the probe beam interferes with the slave light beams which act as pump beams in the non-linear material to record a hologram, and wherein the slave light beams are diffracted in a direction of the probe beam to produce a coherent addition of said pump beams.
2 more elements
Dependencies are inferred from the claim text.