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Proceedings Paper

Effective absorption in cladding-pumped fibers
Author(s): Michalis N. Zervas; Andy Marshall; Jaesun Kim
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Paper Abstract

We investigate experimentally and theoretically the wavelength dependence of the pump absorption along Yb3+-doped fibers, for cladding-pumped single as well as coupled multimode (GTWaveTM) fibers. We show that significant spectral absorption distortions occur along the length with the 976nm absorption peak affected the most. We have developed a novel theoretical approach, based on coupled mode theory, to explain the observed effects. We have also investigated the mode mixing requirements in order to improve the absorption spectral distribution along the increase the overall absorption efficiency and discuss the implications on fiber laser performance.

Paper Details

Date Published: 10 February 2011
PDF: 13 pages
Proc. SPIE 7914, Fiber Lasers VIII: Technology, Systems, and Applications, 79141T (10 February 2011); doi: 10.1117/12.877790
Show Author Affiliations
Michalis N. Zervas, SPI Lasers (United Kingdom)
Univ. of Southampton (United Kingdom)
Andy Marshall, SPI Lasers (United Kingdom)
Jaesun Kim, SPI Lasers (United Kingdom)

Published in SPIE Proceedings Vol. 7914:
Fiber Lasers VIII: Technology, Systems, and Applications
Jay W. Dawson, Editor(s)

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