Visible upconversion lasers in praseodymium-ytterbium-doped fibers |
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| Authors: | H Zellmer P Riedel A Tünnermann |
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| Institution: | (1) Friedrich Schiller University Jena, Institute of Applied Physics, Max Wien Platz 1, D-07743 Jena, Germany (Fax: +49 3641/65 7680, E-mail: zellmer@iap.uni-jena.de), DE |
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| Abstract: | We report on a ZBLAN-fiber-based praseodymium-ytterbium-doped upconversion fiber laser operating in the blue-green with diffraction-limited
beam quality. cw output powers of more than 150 mW at 491 nm are achieved for several hours without degradation. The spectroscopic
data of the active material and laser parameters including the amplitude noise are discussed.
Received: 28 June 1999 / Revised version: 20 August 1999 / Published online: 20 October 1999 |
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| Keywords: | PACS: 42 55 Wd 42 60 Lh |
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