Open access data for figures in: A H Quarterman, S Mirkhanov, C J C Smyth and K G Wilcox, "Measurements of nonlinear lensing in a semiconductor disk laser gain sample under optical pumping and using a resonant femtosecond probe laser," Applied Physics Letters 109, 121113 (2016). Excel spreadsheet includes the data plotted in each figure section as labelled. Further detail available in manuscript publication at http://dx.doi.org/10.1063/1.4963352