Formation of slab waveguides in eulytine type BGO and CaF 2 crystals by implantation of MeV nitrogen ions

I. Bányász, S. Berneschi, N. Q. Khánh, T. Lohner, K. Lengyel, M. Fried, Á Péter, P. Petrik, Z. Zolnai, A. Watterich, G. Nunzi-Conti, S. Pelli, G. C. Righini

Research output: Contribution to journalArticle

8 Citations (Scopus)


Ion implantation, compared with other waveguide fabrication methods, has some unique advantages. It has proved to be a universal technique for producing waveguides in most optical materials. The authors of the present article reported fabrication of channel and slab waveguides in an Erbium-doped tungsten tellurite glass by implantation of MeV energy N + ions. The present article reports successful adaptation of the same technique to the fabrication of slab waveguides in eulytine type bismuth germanate (BGO) and CaF 2 crystals. This is the first report on successful waveguide fabrication in these materials using 3.5 MeV N + ions at implanted fluences between 5 × 10 15 and 4 × 10 16 ions/cm 2. Spectroscopic ellipsometric measurements revealed the existence of guiding structures in both materials. M-line spectroscopic measurements indicated guiding effect in the as-implanted BGO up to 1550 nm and up to 980 nm in the as-implanted CaF 2. Ion implantation induced the appearance of three peaks in the UV/Vis absorption spectrum of CaF 2, that can be attributed to colour centres.

Original languageEnglish
Pages (from-to)80-84
Number of pages5
JournalNuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Publication statusPublished - Sep 1 2012


  • BGO
  • CaF
  • Ion beam irradiation
  • M-line spectroscopy
  • Optical waveguide
  • Spectroscopic ellipsometry

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Instrumentation

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