Tampere University of Technology

TUTCRIS Research Portal

Enhancement of second-harmonic generation from silicon nitride with gold gratings

Research output: Contribution to journalArticleScientificpeer-review

Details

Original languageEnglish
Pages (from-to)30695-30700
Number of pages6
JournalOptics Express
Volume23
Issue number24
DOIs
Publication statusPublished - 1 Nov 2015
Publication typeA1 Journal article-refereed

Abstract

We report strong enhancement of second-harmonic generation in a hybrid nanostructure with gold gratings embedded in a silicon nitride film. Compared to a flat silicon nitride film, the enhancement factor can be as large as 102 to 103 for transverse magnetic and electric polarizations, respectively in good agreement with numerical results calculated using finite element method. For both polarizations, the enhancement arises from a resonance between the waveguide modes and grating.

Keywords

  • Diffraction gratings, Harmonic generation and mixing, Subwavelength structures

Publication forum classification

Field of science, Statistics Finland