Rare-earth doping for advanced materials for photonic applications - 2011 : symposium held April 25-29, 2011, San Francisco, California, U.S.A. / by Symposium V, "Rare-earth doping for advanced materials for photonic applications" (2011 : San Francisco, Calif.), Dierolf, Volkmar, 1960-, Materials Research Society. Meeting (2011 : San Francisco, Calif.)