Enhanced nonlinear optical conversion from a periodically nanostructured metal film

Ajay Nahata*, Richard A. Linke, T. Ishi, K. Ohashi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

181 Citations (Scopus)


We demonstrate an ∼104 increase in conversion efficiency for optical second-harmonic generation (SHG) from a periodically nanostructured metal structure consisting of a single subwavelength aperture in a thin silver film surrounded by a set of concentric surface grooves. The forward-transmitted second-harmonic radiation from this structure is measured relative to that from an identical aperture with no surrounding surface periodicity. We explain the observed SHG enhancement quantitatively in terms of a measured 120× increase in the strength of the fundamental radiation in the vicinity of the aperture resulting from the periodic nano-structuring.

Original languageEnglish
Pages (from-to)423-425
Number of pages3
JournalOptics Letters
Issue number6
Publication statusPublished - 2003 Mar 15
Externally publishedYes

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics


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