Thermal lens and Auger upconversion losses'effect on the efficiency of 'Nd POT.3+'-doped lead lanthanum zirconate titanate transparent ceramics - de Camargo, Andrea Simone Stucchi; Jacinto, Carlos; Catunda, Tomaz; Nunes, Luiz Antônio de Oliveira; Garcia, Ducinei; Eiras, José Antonio (Journal of the Optical Society of America B, 2006)