Effects of Benzoic Acid Dilution on Proton-Exchanged LiTaO3 Optical Waveguides,

Abstract

We have previously reported for the first time an increase of the surface extraordinary refractive index after annealing in H+:LiTaO3 optical waveguides fabricated in benzoic acid or pyrophosphoric acid. This anomalous index increase is thought to be caused by a movement of protons in a unit cell. Recently, we have also reported that the higher surface index was observed for waveguides proton-exchanged in diluted benzoic acid when compared with those fabricated using neat benzoic acid. In this paper, we investigate the effects of melt dilution on the properties of H+:LiTaO3 waveguides by examining the effective index, measuring the electrooptic coefficient r(T/33) and performing XRC analysis and IR absorption spectroscopy.

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1992
Accession Number
ADP008176

Entities

People

  • Kunio Tada
  • Toshiya Yuhara

Organizations

  • University of Tokyo

Tags

DTIC Thesaurus Topics

  • Absorption
  • Annealing
  • Benzoic Acids
  • Coefficients
  • Dilution
  • Optical Waveguides
  • Photonics
  • Refractive Index
  • Spectroscopy
  • Waveguides

Fields of Study

  • Physics

Readers

  • Analytical Chemistry
  • Materials Science and Engineering.
  • Optical Physics and Photonics.