Surface-enhanced optical nonlinearity of a gold film

P. Wang, Y. Lu, L. Tang, J. Zhang, H. Ming, J. Xie, F.-H. Ho, H.-H. Chang, H.-Y. Lin, Din-ping Tsai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

36 Citations (Scopus)

Abstract

The enhancement of optical nonlinearities in a gold film with random roughness were measured by Z-scan technique with 0.71 ns, 532 nm laser pulses. The values of the nonlinear absorption coefficient ? and nonlinear refractive index coefficient ? were obtained through open- and close-aperture Z-scan, ? = -1.3 × 10-5 m/W, ? = 1. 32 × 10-12 m2/W, correspondingly, the imaginary part ?(3)Im and the real part ?(3) Re of the third-order nonlinear susceptibility ?(3) were obtained, respectively. The thermal effect and the enhancement of optical nonlinearities due to the surface plasmon resonance in metal film were discussed. © 2003 Elsevier B.V. All rights reserved.
Original languageEnglish
Pages (from-to)425-429
Number of pages5
JournalOptics Communications
Volume229
Issue number1-6
DOIs
Publication statusPublished - 2 Jan 2004
Externally publishedYes

Keywords

  • Optical nonlinearity
  • Surface plasmon resonance
  • Z-scan

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

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