Stimulated emission and excited state absorption in neodymium-doped Ca'Nb IND. 2''O IND. 6' single crystal fibers grown by the LHPG technique - de Camargo, Andrea Simone Stucchi; Silva, R. Almeida; Andreeta, José Pedro; Nunes, Luiz Antônio de Oliveira (Applied Physics B, 2005)