Near-infrared to ultra-violet frequency conversion in chalcogenide metasurfaces.

Journal Article (Journal Article)

Chalcogenide photonics offers unique solutions for a broad range of applications from mid-infrared sensing to integrated, ultrafast, ultrahigh-bandwidth signal processing. However, to date its usage has been limited to the infrared part of the electromagnetic spectrum, thus avoiding ultraviolet and visible ranges due to absorption of chalcogenide glasses. Here, we experimentally demonstrate and report near-infrared to ultraviolet frequency conversion in an As2 S3 -based metasurface, enabled by a phase locking mechanism between the pump and the inhomogeneous portion of the third harmonic signal. Due to the phase locking, the inhomogeneous component co-propagates with the pump pulse and encounters the same effective dispersion as the infrared pump, and thus experiences little or no absorption, consequently opening previously unexploited spectral range for chalcogenide glass science and applications, despite the presence of strong material absorption in this range.

Full Text

Duke Authors

Cited Authors

  • Gao, J; Vincenti, MA; Frantz, J; Clabeau, A; Qiao, X; Feng, L; Scalora, M; Litchinitser, NM

Published Date

  • October 2021

Published In

Volume / Issue

  • 12 / 1

Start / End Page

  • 5833 -

PubMed ID

  • 34611169

Pubmed Central ID

  • PMC8492647

Electronic International Standard Serial Number (EISSN)

  • 2041-1723

International Standard Serial Number (ISSN)

  • 2041-1723

Digital Object Identifier (DOI)

  • 10.1038/s41467-021-26094-1

Language

  • eng