| Original Articles |
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Enhanced Nonlinear Optical Properties of Laser Deposited Ag/BaTiO3 Nanocomposite Films |
| YANG Guang;WANG Wei-Tian;YANG Guo-Zhen;CHEN Zheng-Hao |
| Laboratory of Optical Physics, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080 |
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| Cite this article: |
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YANG Guang, WANG Wei-Tian, YANG Guo-Zhen et al 2003 Chin. Phys. Lett. 20 924-927 |
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Abstract The composite films containing Ag particles embedded in BaTiO3 matrix were deposited on MgO (100) substrates by using the pulsed laser deposition technique and characterized by x-ray diffraction and x-ray photoelectron spectroscopy. The absorption peak resulting from the surface plasmon resonance of Ag particles is found at the wavelength of 430 nm. The third-order nonlinear optical characteristics of the films are determined by z-scan technique using a nanosecond laser. The results show that the Ag/BaTiO3 nanocomposite films exhibit great optical nonlinearities and the real and imaginary parts of the third-order nonlinear susceptibility X(3) are calculated to be 4.544 x 10-6 esu and 2.352 x 10-7 esu, respectively. The enhancement mechanism of X(3) is discussed.
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| Keywords:
77.84.-s
81.15.Fg
61.10.-i
42.25.Bs
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Published: 01 June 2003
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| PACS: |
77.84.-s
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(Dielectric, piezoelectric, ferroelectric, and antiferroelectric materials)
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81.15.Fg
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(Pulsed laser ablation deposition)
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61.10.-i
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42.25.Bs
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(Wave propagation, transmission and absorption)
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