Non-linear properties for Membranes of Rhodamine tincture by using Z-Scan Technique

ABSTRACT This research study the spectral properties for Rhodamine ( R6G) dissolved in chloroform and blended with epoxy resin with a (3*10-5 mol /L) concentration at different thickness (4.6,22.6,23.3,29.6,32.3 mm). The membrane was prepared by spin coating method. The Z- scan technique was used to the study of nonlinear absorption coefficient(β) and nonlinear refractive coefficient (n2) using a (100 mW) Neodymium- doped Yttrium Garnet( Nd: YAG) continuous laser (CW) with second harmonic generate at wavelength (532 mW). In general the results showed that the non-linear properties appears clear when the thickness of the sample decreased.