Chakravarty, Ritaban and Pal, Atasi and Velmurugan, V and Sen, Ranjan (2011) Role of charge transfer transition mechanism behind photodarkening in Yb doped silica fibers. In: International Conference on Light Optics: Phenomena, Materials, Devices, and Characterization, OPTICS 2011, 23 - 25 May, 2011, Calicut, Kerala.