Two-dimensional waveguides in magneto-optical glasses fabricated by carbon ion implantation and femtosecond laser ablation

Abstract

The exploration of 2D waveguide structures on optoelectronic materials is important for applications in integrated optics devices. In this work, 2D waveguides on the magneto-optical glass were fabricated via combining the carbon ion implantation and the femtosecond laser ablation. Firstly, the 1D waveguide was formed by the double energy (6.0+5.5) MeV carbon ion implantation with fluences of (8.0+4.0)×1013 ions/cm2. Subsequently, the femtosecond laser ablation with 800-nm central wavelength and 1.0-kHz repetition rate was conducted on the 1D waveguide surface to manufacture 2D guiding structures. The end-facet images were captured by an optical microscope. The near-field modal profiles of the 2D waveguides were recorded by an end-face coupling system at near-infrared (976 nm) and visible (532 nm) bands. The research results provide the feasibility and the experimental basis for the preparation of a magneto-optical waveguide isolator.