中国物理B ›› 2005, Vol. 14 ›› Issue (9): 1915-1918.doi: 10.1088/1009-1963/14/9/042

• • 上一篇    

Nonlinear optical properties of Au/PVP composite thin films

沈鸿1, 程波林1, 吕国伟1, 关东仪1, 陈正豪1, 杨国桢1, 王伟田2   

  1. (1)Beijing National Laboratory for Condensed Matter Physics,Institute of Physics,Chinese Academy of Sciences, Beijing 100080, China; (2)Institute of Opto-Electronic Information Science and Technology,Yantai University, Yantai 264005, China
  • 收稿日期:2005-04-20 修回日期:2005-05-18 出版日期:2005-09-20 发布日期:2005-09-20
  • 基金资助:
    Project supported by the Sino-France Program for Advanced Research (Grant No PRA MX03-07).

Nonlinear optical properties of Au/PVP composite thin films

Shen Hong (沈鸿)a, Cheng Bo-Lin (程波林)a, Lü Guo-Wei (吕国伟)a, Wang Wei-Tian (王伟田)b, Guan Dong-Yi (关东仪)a, Chen Zheng-Hao (陈正豪)a, Yang Guo-Zhen (杨国桢)a   

  1. a Beijing National Laboratory for Condensed Matter Physics,Institute of Physics, Chinese Academy of Sciences, Beijing 100080, China; b Institute of Opto-Electronic Information Science and Technology,Yantai University, Yantai 264005, China
  • Received:2005-04-20 Revised:2005-05-18 Online:2005-09-20 Published:2005-09-20
  • Supported by:
    Project supported by the Sino-France Program for Advanced Research (Grant No PRA MX03-07).

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摘要： Colloidal Au and poly(vinylpyrrolidone) (PVP) composite thin films are fabricated by spin-coating method. Linear optical absorption measurements of the Au/PVP composite films indicate an absorption peak around 530 nm due to the surface plasmon resonance of gold nanoparticles. Nonlinear optical properties are studied using standard Z-scan technique, and experimental results show large optical nonlinearities of the Au/PVP composite films. A large value of \chi3 / \alpha up to 0.56×10-10esu?cm is obtained, which is comparable to the best values reported in metal/oxide composite films.

关键词: Au/PVP, third-order optical nonlinearities, third-order susceptibility

Abstract: Colloidal Au and poly(vinylpyrrolidone) (PVP) composite thin films are fabricated by spin-coating method. Linear optical absorption measurements of the Au/PVP composite films indicate an absorption peak around 530 nm due to the surface plasmon resonance of gold nanoparticles. Nonlinear optical properties are studied using standard Z-scan technique, and experimental results show large optical nonlinearities of the Au/PVP composite films. A large value of $\chi^{(3)}/\alpha$  up to 0.56×10-10esu$\cdot$cm is obtained, which is comparable to the best values reported in metal/oxide composite films.

Key words: Au/PVP, third-order optical nonlinearities, third-order susceptibility

中图分类号:  (Composite materials)

  • 78.66.Sq
73.22.Lp (Collective excitations) 78.20.Ci (Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity)) 42.65.An (Optical susceptibility, hyperpolarizability)