Sani, ElisaElisaSaniDELL'ORO, AldoAldoDELL'ORO2020-03-302020-03-3020150925-3467http://hdl.handle.net/20.500.12386/23706The authors would like to integrate the information contained in the printed version of the above article by providing numerical data concerning Fig. 2 of the mentioned paper. A part of these data was already reported in Table 1 of the mentioned paper in a reduced form for space reasons.STAMPAenArticle10.1016/j.optmat.2015.06.0392-s2.0-84940446756000361578300044http://www.sciencedirect.com/science/article/pii/S09253467150039972015OptMa..48..281SFIS/05 - ASTRONOMIA E ASTROFISICAScienze Fisiche Settori ERC (ERC) di riferimento::PE2 Fundamental constituents of matter: particle, nuclear, plasma, atomic, molecular, gas, and optical plasma::PE2_9 Optics, non-linear optics and nano-optics