Optically induced sub-wavelength transient apertures in Sb-Te based films

Robert E. Simpson, Paul J. Fons, Alexander V. Kolobov, Xiomin Wang, Junji Tominaga

研究成果: Conference contribution

抄録

The origin of sub-diffraction-limit apertures in Sb-based thin films is discussed. Electromagnetic energy can be channeled by these apertures thus allowing near-field focussing- the Super-RENS effect. The aperture formation within Sb, Sb 2Te 3 , Sb 2Te, SbTe and Ge 2Sb 2Te 5 is investigated by time resolved optical pump-probe techniques and found to occur without melting. Density functional calculations have shown that these materials exhibit a threshold-like change in their optical properties below their melting temperatures. The threshold is shown to be a consequence of thermally induced misalignment of p-orbital bonds. It is the non-linearity of this process that leads to the formation of the sub-diffraction-limit apertures.

本文言語English
ホスト出版物のタイトルPhase-Change Materials for Memory and Reconfigurable Electronics Applications
ページ9-14
ページ数6
DOI
出版ステータスPublished - 2011
外部発表はい
イベント2011 MRS Spring Meeting - San Francisco, CA, United States
継続期間: 2011 4月 252011 4月 29

出版物シリーズ

名前Materials Research Society Symposium Proceedings
1338
ISSN(印刷版)0272-9172

Other

Other2011 MRS Spring Meeting
国/地域United States
CitySan Francisco, CA
Period11/4/2511/4/29

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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