Spectral characteristics and nonlinear studies of acridine orange dye

Solid-state dye-doped polymer is an attractive alternative to the conventional liquid dye solution. In this Letter the spectral characteristics and the nonlinear optical properties of the dye acridine orange are studied. The nonlinear refractive index of the dye in n-butyl acetate (nBA) and dye-doped polymer film were measured using z-scan technique [IEEE J. Quantum Electron. 26 (4) (1990) 760]. The dye shows a negative nonlinear refractive index.