Author/Authors :
Lu، نويسنده , , Guowei and Cheng، نويسنده , , Bolin and Shen، نويسنده , , Hong and Chen، نويسنده , , Yujin and Wang، نويسنده , , Taihong and Chen، نويسنده , , Zhenghao and Lu، نويسنده , , Huibin and Jin، نويسنده , , Kuijuan and Zhou، نويسنده , , Yueliang and Yang، نويسنده , , Guozhen، نويسنده ,
Abstract :
Composite thin films of multiwalled carbon nanotubes and BaTiO3 prepared by pulsed-laser deposition technique are investigated, which have large optical third-order nonlinearity. We characterized the films by using scanning electron microscopy, Raman spectroscopy, UV–vis absorption and X-ray diffraction. The observation reveals that the multiwalled carbon nanotubes are coated by the amorphous BaTiO3. Nonlinear optical properties of the composite films are investigated by z-scan technique. The result shows that the value of third-order nonlinear susceptibility χ(3) has achieved as high as 10−6 esu, which is more than three orders of magnitude larger than that of carbon nanotubes in suspension.
