High-harmonic generation by field enhanced femtosecond pulses in metal-sapphire nanostructure

Seunghwoi Han, Hyunwoong Kim, Yong Woo Kim, Young-Jin Kim, Seungchul Kim, In-Yong Park and Seung-Woo Kim ()
Additional contact information
Seunghwoi Han: Korea Advanced Institute of Science and Technology (KAIST)
Hyunwoong Kim: Korea Advanced Institute of Science and Technology (KAIST)
Yong Woo Kim: Korea Advanced Institute of Science and Technology (KAIST)
Young-Jin Kim: School of Mechanical and Aerospace Engineering, Nanyang Technological University (NTU)
Seungchul Kim: Max Planck Center for Attosecond Science, Max Planck POSTECH/KOREA Res. Initiative
In-Yong Park: Korea Research Institute of Standards and Science (KRISS)
Seung-Woo Kim: Korea Advanced Institute of Science and Technology (KAIST)

Nature Communications, 2016, vol. 7, issue 1, 1-7

Abstract: Abstract Plasmonic high-harmonic generation (HHG) drew attention as a means of producing coherent extreme ultraviolet (EUV) radiation by taking advantage of field enhancement occurring in metallic nanostructures. Here a metal-sapphire nanostructure is devised to provide a solid tip as the HHG emitter, replacing commonly used gaseous atoms. The fabricated solid tip is made of monocrystalline sapphire surrounded by a gold thin-film layer, and intended to produce EUV harmonics by the inter- and intra-band oscillations of electrons driven by the incident laser. The metal-sapphire nanostructure enhances the incident laser field by means of surface plasmon polaritons, triggering HHG directly from moderate femtosecond pulses of ∼0.1 TW cm−2 intensities. The measured EUV spectra exhibit odd-order harmonics up to ∼60 nm wavelengths without the plasma atomic lines typically seen when using gaseous atoms as the HHG emitter. This experimental outcome confirms that the plasmonic HHG approach is a promising way to realize coherent EUV sources for nano-scale near-field applications in spectroscopy, microscopy, lithography and atto-second physics.

Date: 2016
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.nature.com/articles/ncomms13105 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13105

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms13105

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().