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. © 2011 Elsevier B.V. All rights reserved.
Formation of slab waveguides in eulytine type BGO and CaF2 crystals by implantation of MeV nitrogen ions.
S Berneschi;G Nunzi Conti;S Pelli;
2012
Abstract
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. © 2011 Elsevier B.V. All rights reserved.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
