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US 2001/0017867 A1Published application
Fiber amplifier
AssigneeSCHNEIDER Laser Technologies AG
InventorsJuergen Kraenert, Thomas Gabler, Holger Zellmer, Andreas Tuennermann
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Abstract
A fiber amplifier is disclosed comprising a signal source (oscillator), an amplifier fiber and a pump laser. The amplifier fiber is arranged between two polarizers and a portion of the beam that is depolarized in the amplifier fiber is coupled out at the amplifier output, returned to the amplifier input, coupled into the amplifier fiber with the radiation from the signal source and amplified again, and another portion, as linearly polarized beam, exits the fiber amplifier as useful beam.
Claims7
A fiber amplifier comprising:
- a signal source;
- an amplifier fiber;
- and
- a pump laser;
- said amplifier fiber being arranged between two polarizers;
- and
- a portion of the beam that is depolarized in the amplifier fiber being coupled out at the amplifier output, returned to the amplifier input, coupled into the amplifier fiber with the radiation from the signal source and amplified again;
- and
- another portion, as a linearly polarized beam, exiting the fiber amplifier as a useful beam.
6 more elements
Dependencies are inferred from the claim text.