22 February 2008 Comparison of photodarkening in Ytterbium-doped fibers
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Abstract
Development of photodarkening in two similar large-mode-area ytterbium doped fibers from different sources is compared. The excess loss induced by photodarkening is derived from transmission loss measurements of pristine and pumped or photodarkened samples. To accelerate the photodarkening process, cladding pumping is used so as to achieve high and uniform inversion through the sample. Further, intensity profiles are measured and compared in effort to detect possible radial variations in the induced losses.
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Mikko Söderlund, Joan Montiel, Simo Tammela, Sanna Yliniemi, Seppo Honkanen, "Comparison of photodarkening in Ytterbium-doped fibers", Proc. SPIE 6873, Fiber Lasers V: Technology, Systems, and Applications, 687325 (22 February 2008); doi: 10.1117/12.775012; https://doi.org/10.1117/12.775012
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