Linear, nonlinear and optical limiting properties of carbon black in epoxy resin

Films of an epoxy resin doped carbon black were prepared by casting method onto BK7 glass substrates. The surface morphology of these films were investigated together with the nonlinear optical properties under CW laser light irradiation of 532 nm wavelength using diffraction ring pattern and Z-scan techniques. The prepared samples exhibited strong self-defocusing effect and good optical limiting behavior.