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Passive phase locking of an array of four fiber amplifiers by an all-optical feedback loop

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Abstract

We report the passive phase locking of an array of four fiber amplifiers in a unidirectional ring cavity. The feedback loop consists of a single-mode fiber that filters intracavity the far-field pattern of the four emitted beams. The pointing of the laser output can be managed by the intracavity filtering.

© 2007 Optical Society of America

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