Enhanced nonlinear optical conversion from a periodically nanostructured metal film

Ajay Nahata, Richard A. Linke, T. Ishi, Keishi Ohashi

Research output: Contribution to journalArticle

171 Citations (Scopus)

Abstract

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
Volume28
Issue number6
Publication statusPublished - 2003 Mar 15
Externally publishedYes

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metal films
apertures
harmonic generations
harmonic radiation
grooves
periodic variations
silver
augmentation
radiation
metals

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Enhanced nonlinear optical conversion from a periodically nanostructured metal film. / Nahata, Ajay; Linke, Richard A.; Ishi, T.; Ohashi, Keishi.

In: Optics Letters, Vol. 28, No. 6, 15.03.2003, p. 423-425.

Research output: Contribution to journalArticle

Nahata, Ajay ; Linke, Richard A. ; Ishi, T. ; Ohashi, Keishi. / Enhanced nonlinear optical conversion from a periodically nanostructured metal film. In: Optics Letters. 2003 ; Vol. 28, No. 6. pp. 423-425.
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