Optical and electro-optical properties of sol-gel derived ferroelectric thin films

G. Teowee, J. M. Boulton, D. R. Uhlmann

Research output: Contribution to journalArticle

8 Scopus citations

Abstract

Ferroelectric (FE) thin films have been widely studied, especially for their electrical and ferroelectric properties, such as nonvolatile FE memory and ultrahigh density DRAMs. FE films also give rise to a variety of interesting and unique optical applications, such as electro-optic switches, passive and active waveguides, second harmonic generation, optical data storage, optical diodes and photovoltaic devices. Their dielectric properties have been extensively optimized but the optical and electro-optical aspects have not been satisfactorily explored. This paper will review the latest advances in the optical and electro-optical properties of FE films, highlighted by data obtained from our laboratories. Optical (refractive index and waveguiding loss) and electro-optical (linear (r33) and quadratic (R33) electro-optic coefficients) properties will be presented. Optimization of these properties by precise tailoring of chemistry, processing conditions and microstructure is discussed. Low optical loss, i.e., < 2 dB/cm and an exceptionally high r33 value of 315pm/V from PLZT films were obtained.

Original languageEnglish (US)
Pages (from-to)39-54
Number of pages16
JournalIntegrated Ferroelectrics
Volume20
Issue number1-4
DOIs
StatePublished - Jan 1 1998

Keywords

  • Electro-optic coefficients
  • Electro-optical
  • Ferroelectric films
  • Optical
  • Optical loss

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Control and Systems Engineering
  • Ceramics and Composites
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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