GSvit — An open source FDTD solver for realistic nanoscale optics simulations

Surface and volume imperfections can significantly affect the performance of nanoscale or microscale devices used in photonics, optoelectronics scientific instrumentation. In this article we present an open source software package for Finite-Difference Time-Domain electromagnetic field calculations suitable on graphics cards. Its special features include handling realistic models imperfect objects, such as treatment arbitrary geometries including addition random roughness to any geometrical object. The method is compared conventional optical approach represented by Rayleigh-Rice theory. Practical applicability demonstrated using a calculation variation enhancement at proximity rough antenna particle scattering. It shown that be namely useful areas where many repeated are necessary, e.g. when studying how response objects vary they rough. Program Title: GSvit CPC Library link program files: https://doi.org/10.17632/k424zbsxnk.1 Licensing provisions: GPLv2 Programming language: C Nature problem: If want analyse impact imperfections, particular surface roughness, need run with different realisations. general solver optimized running calculations, via fast computing cards algorithms loading data modification their geometry construct randomly surfaces interfaces. Solution method: implemented computer processor card, advanced pre-processing order add 3D objects. Additional comments restrictions unusual features: current version software, documentation downloadable examples found http://gsvit.net/.