論文

査読有り
2018年8月

Antenna-enhanced high harmonic generation in a wide-bandgap semiconductor ZnO

OPTICS EXPRESS
  • Imasaka, Kotaro
  • ,
  • Kaji, Tomohiro
  • ,
  • Shimura, Tsutomu
  • ,
  • Ashihara, Satoshi

担当区分
筆頭著者
26
16
開始ページ
21364
終了ページ
21374
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1364/OE.26.021364
出版者・発行元
OPTICAL SOC AMER

High harmonic generation (HHG) in solids has great potential for coherent extreme ultraviolet (EUV) sources, all-optical band-structure reconstruction, and electron dynamics metrology. Solid HHG driven by plasmonic near-fields will open a new paradigm, enabling high repetition-rate HHG with a compact laser, HHG manipulation with meta-surfaces, and precise control over carrier trajectory. In this paper, we demonstrate antenna-enhanced HHG in a wide-bandgap semiconductor ZnO. By exploiting gold nano-antennas resonating at the driver wavelength of 2 mu m, we successfully trigger HHG at input intensity of similar to 0.02 TW/cm(2) and observe harmonic radiations up to 9th-order. Orders-of-magnitude enhanced conversion efficiency at the hot-spots brings about ten-fold enhancement in the total yield. The spectral selection rule is found to reflect crystal symmetry, suggesting the possibility of nano-scaled EUV sources and band-structure reconstruction. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement

Web of Science ® 被引用回数 : 7

リンク情報
DOI
https://doi.org/10.1364/OE.26.021364
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000440803600146&DestApp=WOS_CPL