Simulation of spatial distribution of electric field after electron beam irradiation of MgO-doped LiNbO₃ covered by resist layer

ABSTRACT

Spatial distribution of electric field after electron beam irradiation of MgO-doped LiNbO₃ with resist layer on irradiated polar surface has been studied by computer simulation. The space distribution of electrons was simulated by Casino software and analyzed by original algorithm to construct analytical function. The distribution of electric field was evaluated by Comsol software. The correlation between the value of polar component of electric field on the resist – MgOLN interface and quality of the domain patterns has been demonstrated. The calculated optimal electron energy for given resist layer thickness allowed to create fine periodical domain structure for nonlinear optical application.

KEYWORDS:

• Electron spatial distribution
• electric field distribution
• computer simulation
• lithium niobate
• electron beam irradiation
• resist layer

Acknowledgments

The equipment of the Ural Center for Shared Use “Modern nanotechnology” UrFU was used.

Funding

The research was made possible in part by the Ministry of Education and Science of the Russian Federation (UID RFMEFI594140011), by RFBR (Grants 13-02-01391-a, 14-02-31255-mol_a and 15-32-21102-mol_a_ved), by Government of the Russian Federation (Act 211, Agreement 02.A03.21.0006).