Experimental results are presented about specific mass ablation rate, ablation pressure, hydrodynamic efficiency and other parameters by using ion measurements in laser produced plasmas obtained at tilted plain mylar targest irradiated by Nd: glass high power laser with both P polarization and 8 polarization. Laser irradiance on target surface is ranging from 2×1012 to 1014 W·cm-2. Experimental scaling laaw is compared with theory. The difference of ablation parameters and temporal ion signals collected from the back of the thin foils produced by different polarization of the incident light is preliminarily discussed.