Yb-doped silica nanoparticles were fabricated in a MCVD process. Their compositions and doping levels were well controlled. The nanoparticles are of about 21.3 ± 4.6 nm in size, and exhibit the Yb3+–absorption in NIR and several photodarkening bands in UV-Vis. The photodarkening strongly depends on the compositions.

© 2009 OSA, IEEE Photonics Society, SPIE, COS, CIC

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