Influence of probe beam multi-reflection on thermal lens measurements: Application to Nd:YAG rods A.R. Nunes, J.H. Rohling, A.N. Medina, J.R.D. Pereira, A.C. Bento, M.L. Baesso, L.A.O. Nunes et T. Catunda J. Phys. IV France, 125 (2005) 189-191 DOI: 10.1051/jp4:2005125044