Non-melting super-resolution near-field apertures in Sb-Te alloys

R. E. Simpson, P. Fons, X. Wang, A. V. Kolobov, T. Fukaya, J. Tominaga

Research output: Contribution to journalArticle

28 Citations (Scopus)

Abstract

The super-resolution near-field structure permits the formation of short-lived subdiffraction limit apertures that channel electromagnetic energy at the aperture boundary. This effect is commonly observed when a laser is focused onto a thin film of Sb based material. The aperture formation within Sb, Sb2 Te3, Sb2 Te, and SbTe is investigated by time resolved optical pump-probe techniques and found to occur without melting. Ab initio modeling has shown a threshold-like change in the optical properties below the melting temperature which leads to the formation of a near-field aperture. This threshold is shown to be a consequence of thermally induced misalignment of p-type bonding.

Original languageEnglish
Article number161906
JournalApplied Physics Letters
Volume97
Issue number16
DOIs
Publication statusPublished - 2010 Oct 18
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Non-melting super-resolution near-field apertures in Sb-Te alloys'. Together they form a unique fingerprint.

  • Cite this

    Simpson, R. E., Fons, P., Wang, X., Kolobov, A. V., Fukaya, T., & Tominaga, J. (2010). Non-melting super-resolution near-field apertures in Sb-Te alloys. Applied Physics Letters, 97(16), [161906]. https://doi.org/10.1063/1.3502593