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Diode-pumped Yb-doped large-core fiber amplifier with a multimode-to-singlemode photorefractive converter

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Abstract

We demonstrate a diode-pumped Yb-doped fiber master oscillator power multimode amplifier. The multimode output beam is converted to singlemode by a two wave mixing process in an infrared sensitive photorefractive crystal (Rh:BaTiO3). Up to 1W singlemode output is achieved by compensation of thermally-induced phase fluctuations in the fiber.

© 2003 Optical Society of America

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