Abstract
In this paper, ZnO, MoS2 and ZnO-time/MoS2 films with excellent nonlinear absorption (NA) properties were successfully prepared by single/two-step magnetron sputtering. The morphology, structure and NA property of the samples were studied. The scanning electron microscope results show that cluster-like MoS2 have different morphology. This phenomenon can be attributed to the fact that the multi-directional growth of the ZnO base films causes the original growth orientation of MoS2 to be changed. The NA characteristics under different excitation intensities are studied by Z-Scan technology. The material exhibits the reverse saturation absorption characteristic caused by two-photon absorption. Furthermore, the order of magnitude of NA coefficient for samples was determined to be 10−6 cm/W. The ZnO-time/MoS2 films display excellent NA characteristics, which are desirable for field of optical switch, optical limiting, optical communication and integrated optics.
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