Pulsed Laser Deposition of Zinc Thin Films and Investigation of Their Optical Limiting Properties

In this work, preparation of zinc thin films using pulsed laser deposition technique has been described. Optical absorption spectra of the films have been obtained by Spectrophotometry. The method of measuring the optical limiting of samples and its results in different aperture size are also represented. According to the obtained results, by increasing the aperture size the critical power for observation of nonlinear effects in thin films increases. This is due to elimination of nonlinear refraction effects. In this case, increment of critical power is due to nonlinear absorption which determines the behavior of optical limiting of the films.