Fabrication of optical waveguides in KGW by swift heavy ion beam irradiation

被引：46

作者：

Garcia-Navarro, A.

Olivares, J.

Garcia, G.

Agullo-Lopez, F.

Garcia-Blanco, S.

Merchant, C.

Aitchison, J. Stewart

机构：

[1] CSIC, Inst Opt, E-28006 Madrid, Spain

[2] Univ Autonoma Madrid, CMAM, E-28049 Madrid, Spain

[3] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3G4, Canada

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 2006年 / 249卷

关键词：

optical waveguides; swift ion irradiation; ion nano-tracks;

D O I：

10.1016/j.nimb.2006.03.108

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

Irradiations with F, O at 25 MeV and C at 14 MeV energy have been performed in KGd(WO4)(2) (KGW) in order to fabricate optical waveguides by a novel route based on ion irradiation instead of ion implantation. The method relies on selecting the energy high enough so as to place the maximum of the electronic stopping power a few microns inside the crystal. Then, buried isotropic layers (amorphous-like) are formed which have a low refractive index value of 1.87 (compared to the three crystalline values which are above 2.0). The refractive index profiles obtained are Gaussian-like with 0 ions and more step-like with the usage of C ions. Fairly low fluences in the range 1 x 10(13)-1 x 10(14) have been successfully explored. The results have been compared to those recently obtained for LiNbO3 and have been analyzed with a theoretical model based on thermal spike concept. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：177 / 180

页数：4

共 15 条

[1] Lattice preamorphization by ion irradiation:: Fluence dependence of the electronic stopping power threshold for amorphization -: art. no. 093514 [J].