Highly efficient broadband second harmonic generation using polydomain epitaxial barium titanate thin film waveguides

Pao Tai Lin, Bruce W Wessels, Joon I. Jang, John B Ketterson

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

Broad band second harmonic generation (SHG) over the spectral range of 530-700 nm is reported using an epitaxial barium titanate (BaTiO3) thin film waveguide. The epitaxial layers are multidomain consisting of both a and c domain variants. The SHG conversion efficiency is nearly independent of wavelength over the visible spectra range. An enhanced broadband conversion efficiency was observed that is attributed to random quasi-phase matching in the polydomain epitaxial layers. In contrast to theory of SHG for disordered nonlinear media, the observed SHG shows a quadratic dependence on pump power.

Original languageEnglish (US)
Article number221103
JournalApplied Physics Letters
Volume92
Issue number22
DOIs
StatePublished - Jun 13 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Highly efficient broadband second harmonic generation using polydomain epitaxial barium titanate thin film waveguides'. Together they form a unique fingerprint.

  • Cite this