Open Access Paper
10 September 2010 High harmonic generation by guided surface plasmon polaritons
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Abstract
We discuss how the intriguing phenomenon of surface plasmon resonance (SPR) can be exploited in enhancing the intensity field of the incident femtosecond laser for the purpose of high harmonic generation (HHG). We first summarize our previous attempt made with a 2-D planar nanostructure comprised of metallic bow-tie nano-antennas, which enabled us to generate up to 21st harmonics from Xenon gas using 1-nJ pulse energy with an intensity enhancement factor of ~20 dB. Then we describe another attempt currently being made by devising a 3-D nano-waveguide with the aim of improving the HHG conversion efficiency by expanding the localized volume of field enhancement by means of propagating surface plasmon polaritons (SPPs). Our finite-difference time-domain (FDTD) calculation shows that the enhanced volume can be increased significantly by optimal selection of the waveguide's geometrical parameters as verified in our preliminary experimental results.
© (2010) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Joonhee Choi, Seungchul Kim, In-Yong Park, and Seung-Woo Kim "High harmonic generation by guided surface plasmon polaritons", Proc. SPIE 7757, Plasmonics: Metallic Nanostructures and Their Optical Properties VIII, 77571D (10 September 2010); https://doi.org/10.1117/12.860326
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Cited by 4 scholarly publications.
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KEYWORDS
Waveguides

Nanostructures

Signal detection

Extreme ultraviolet

Finite-difference time-domain method

Near field scanning optical microscopy

Femtosecond phenomena

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