Open AccessOptical properties of planar waveguides on ZnWO_4 formed by carbon and helium ion implantation and effects of annealing
Author(s) -
Jin-Hua Zhao,
Tao Liu,
Shasha Guo,
Jing Guan,
Xuelin Wang
Publication year - 2010
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.18.018989
Subject(s) - materials science , ion implantation , refractive index , optics , ion , annealing (glass) , fluence , planar , helium , absorption (acoustics) , wavelength , optoelectronics , atomic physics , laser , chemistry , physics , computer graphics (images) , organic chemistry , computer science , composite material
We report on the optical properties of ZnWO(4) planar waveguides created by ion implantation, and the effect annealing has on these structures. Planar optical waveguides in ZnWO(4) crystals are fabricated by 5.0 MeV carbon ion implantation with a fluence of 1 × 10(15) ions/cm(2) or 500 keV helium ion implantation with the a fluence of 1 × 10(16) ions/cm(2). The thermal stability was investigated by 60 minute annealing cycles at different temperatures ranging from 260°C to 550°C in air. The guided modes were measured by a model 2010 prism coupler at wavelengths of 633 nm and 1539 nm. The reflectivity calculation method (RCM) was applied to simulate the refractive index profile in these waveguides. The near-field light intensity profiles were measured using the end-face coupling method. The absorption spectra show that the implantation processes have almost no influence on the visible band absorption.