3D Simulations of Electromagnetic Fields in Nanostructures using the Time-Harmonic Finite-Element Method

Details 3D Simulations of Electromagnetic Fields in Nanostructures using the Time-Harmonic Finite-Element Method 3D Simulations of Electromagnetic Fields in Nanostructures using the Time-Harmonic Finite-Element Method

2007-05-16

arxiv.org/abs/0705.2292v1

Proc. SPIE 6617 (2007) 66170V (Modeling Aspects in Optical Metrology, H. Bosse, B. Bodermann, R. M. Silver, Eds.)

Physics

Optics

11 pages, 12 figures, SPIE conference Modeling Aspects in Optical Metrology (2007)

Scientific paper

10.1117/12.726236

Rigorous computer simulations of propagating electromagnetic fields have become an important tool for optical metrology and optics design of nanostructured components. As has been shown in previous benchmarks some of the presently used methods suffer from low convergence rates and/or low accuracy of the results and exhibit very long computation times which makes application to extended 2D layout patterns impractical. We address 3D simulation tasks by using a finite-element solver which has been shown to be superior to competing methods by several orders of magnitude in accuracy and computational time for typical microlithography simulations. We report on the current status of the solver, incorporating higher order edge elements, adaptive refinement methods, and fast solution algorithms. Further, we investigate the performance of the solver in the 3D simulation project of light diffraction off an alternating phase-shift contact-hole mask.

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