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US 4,069,458 AGranted
Power laser chain
AssigneeCompagnie General d'Electricite
InventorsJean-Claude Farcy, Genevieve Girard, Maurice Michon
Life of this patent
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Abstract
Power laser chain. Two amplifying elements are separated by a linear polarizer placed between two polarization transformers such as a quarter wave plate or a Fresnel parallelepiped, this preventing auto-oscillators in the amplifying chain, it being possible to repeat that sequence several times in the chain.
Claims3
In a laser chain including means for generating a circularly polarized laser beam and a plurality of amplifier elements on the path of the laser beam for passage of said laser beam therethrough, the improvement comprising:
- means for optically isolating successive amplifier elements,
- said optically isolating means comprising in series on the path of the laser beam and between said amplifier elements, a linear polarizer between two passive transformers of the type transforming a linear polarization into a circular one and vice versa.
Dependencies are inferred from the claim text.