H. J. Schugar, E. I. Solomon, W. L. Cleveland and L. Goodman, “Simultaneous Pair Electronic Transitions in Yb2O3,” Journal of American chemical Society, Vol. 97, No. 22, 1975, pp. 6442-6450. doi:10.1021/ja00855a024

has been cited by the following article:

• TITLE: Electron-Irradiation and Photo-Excitation Darkening and Bleaching of Yb Doped Silica Fibers: Comparison

  AUTHORS: Alexander V. Kir’yanov

  KEYWORDS: Ytterbium Doped Silica Fibers, Photodarkening, Electron Irradiation

  JOURNAL NAME: Optics and Photonics Journal, Vol.1 No.4, December 5, 2011

  ABSTRACT: We report a comparative experimental study of the attenuation spectra transformations for a series of Yb doped alumino-germano silicate fibers with different contents of Yb3+ dopants, which arise as the result of irradiation either by a beam of high-energy electrons or by resonant (into the 977-nm absorption peak of YbYb3+ ions) optical pumping. The experimental data obtained reveal that in the two circumstances, substantial and complex but different in appearance changes occur within the resonant absorption band of YbYb3+ ions and in the off-resonance background loss of the fibers. Possible mechanisms responsible for these spectral changes are discussed.