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Proceedings Paper

Single- and double-energy N+ - irradiated planar waveguides in eulytine and sillenite type BGO crystals
Author(s): I. Bányász; Z. Zolnai; S. Pelli; S. Berneschi; M. Fried; T. Lohner; G. Nunzi-Conti; G. C. Righini
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Paper Abstract

Bismuth germanate is a well known scintillator material. It is also used in nonlinear optics, e.g. for building Pockels cells, and can also be used in the fabrication of photorefractive devices. In the present work planar optical waveguides were designed and fabricated in eulytine (Bi4Ge3O12) and sillenite (Bi12GeO20) type bismuth germanate crystals using single- and double-energy irradiation with N+ ions in the 2.5 < E < 3.5 MeV range. Planar waveguides were fabricated via scanning a 2 mm × 2 mm beam over the waveguide area. Typical fluences were between 1 • 1015 and 2 • 1016 ions/cm2. Multi-wavelength m-line spectroscopy and spectroscopic ellipsometry were used for the characterization of the ion beam irradiated waveguides. Waveguide structures obtained from the ellipsometric data via simulation were compared to N+ ion distributions calculated using the Stopping and Range of Ions in Matter (SRIM) code. M-lines could be detected up to a wavelength of 1310 nm in the planar waveguide fabricated in sillenite type BGO, and up to 1550 nm in those fabricated in eulytine type BGO.

Paper Details

Date Published: 6 March 2013
PDF: 9 pages
Proc. SPIE 8627, Integrated Optics: Devices, Materials, and Technologies XVII, 862705 (6 March 2013); doi: 10.1117/12.2004563
Show Author Affiliations
I. Bányász, Wigner Research Ctr. for Physics (Hungary)
Z. Zolnai, Research Institute for Technical Physics and Materials Science (Hungary)
S. Pelli, Istituto di Fisica Applicata Nello Carrara (Italy)
S. Berneschi, Museo Storica della Fisica e Ctr. Studi e Ricerche Enrico Fermi (Italy)
Istituto di Fisica Applicata Nello Carrara (Italy)
M. Fried, Research Institute for Technical Physics and Materials Science (Hungary)
T. Lohner, Research Institute for Technical Physics and Materials Science (Hungary)
G. Nunzi-Conti, Istituto di Fisica Applicata Nello Carrara (Italy)
G. C. Righini, Museo Storica della Fisica e Ctr. Studi e Ricerche Enrico Fermi (Italy)
Istituto di Fisica Applicata Nello Carrara (Italy)


Published in SPIE Proceedings Vol. 8627:
Integrated Optics: Devices, Materials, and Technologies XVII
Jean Emmanuel Broquin; Gualtiero Nunzi Conti, Editor(s)

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