Enhanced nonlinear optical conversion from a periodically nanostructured metal film

Ajay Nahata; Richard A. Linke; T. Ishi; K. Ohashi

doi:10.1364/OL.28.000423

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 journal › Article › peer-review

181 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 language	English
Pages (from-to)	423-425
Number of pages	3
Journal	Optics Letters
Volume	28
Issue number	6
DOIs	https://doi.org/10.1364/OL.28.000423
Publication status	Published - 2003 Mar 15
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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AU - Nahata, Ajay

AU - Linke, Richard A.

AU - Ishi, T.

AU - Ohashi, K.

PY - 2003/3/15

Y1 - 2003/3/15

N2 - 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.

AB - 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.

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JO - Optics Letters

JF - Optics Letters

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Enhanced nonlinear optical conversion from a periodically nanostructured metal film

Abstract

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