Silica-based glasses as photonic materials-second-order nonlinearity induced by UV-poling

A. J. Ikushima, T. Fujiwara

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

After simultaneous applications of ultraviolet irradiation and a sufficiently high electric field, the so-called UV-poling, silica glass doped with germanium shows quite a large second-order optical nonlinearities in both bulk and film samples, and thus induced d coefficient is comparable to those of LiNbO3 crystal. The induced effect decays after the UV-poling with exactly a single exponential function of time, suggesting a kind of ordered structure formed in the glass by the UV-poling. The decay rate strongly indicates Ge-E′ centers to be relevant agents to the nonlinearity. The decay or degradation can be made much slower with addition of impurities as electron scavengers. Mechanism to give the nonlinearity will be discussed, relating to generation of crystallites in the glass.

Original languageEnglish
Pages (from-to)499-511
Number of pages13
JournalMolecular Crystals and Liquid Crystals Science and Technology, Section A: Molecular Crystals and Liquid Crystals
Volume353
DOIs
Publication statusPublished - 2000 Jan 1
Externally publishedYes
Event5th International Conference on Frontiers of Polymers and Advanced Materials - Poznan, Poland
Duration: 1999 Jun 211999 Jun 25

Keywords

  • Crystallization in glass
  • Defects in glass
  • Ge-E′ center
  • Optical nonlinearity
  • SHG (Second Harmonic Generation)
  • Silica glass

ASJC Scopus subject areas

  • Condensed Matter Physics

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