Single-and double energy N+ ion irradiated planar optical waveguides in Er: Tungsten-tellurite oxide glass and sillenite type Bismuth Germanate crystals working up to telecommunications wavelengths

I. Bányász, Z. Zolnai, M. Fried, T. Lohner, S. Berneschi, G. C. Righini, S. Pelli, G. Nunzi-Conti

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Ion implantation proved to be a universal technique for producing waveguides in most optical materials. Tellurite glasses are good hosts of rare-earth elements for the development of fibre and integrated optical amplifiers and lasers covering all the main telecommunication bands. Er3+-doped tellurite glasses are good candidates for the fabrication of broadband amplifiers in wavelength division multiplexing around 1.55 lm, as they exhibit large stimulated cross sections and broad emission bandwidth. Fabrication of channel waveguides in such a material via N+ ion implantation was reported recently. Sillenite type Bismuth Germanate (BGO) crystals are good nonlinear optical materials. Parameters of waveguide fabrication in both materials via implantation of MeV-energy N+ ions were optimized. First single-energy implantations at 3.5 MeV at various fluences were applied. Waveguide operation up to 1.5 lm was observed in both materials. Then double-energy implantations at a fixed upper energy of 3.5 MeV and lower energies between 2.5 and 3.1 MeV were performed to suppress leaky modes by increasing barrier width. Improvement of waveguide characteristics was found by m-line spectroscopy and spectroscopic ellipsometry.

Original languageEnglish
Pages (from-to)299-304
Number of pages6
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume307
DOIs
Publication statusPublished - Jan 1 2013

Keywords

  • Er-doped tungsten-tellurite glass
  • Ion implantation
  • M-line spectroscopy
  • Planar optical waveguides
  • Sillenite type BGO
  • Spectroscopic ellipsometry
  • Two-energy irradiation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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