Analysis and Design of Highly Efficient Polarization Independent Transmission Gratings
Abstract
Gratings, especially those with feature size comparable to the wavelength, are known to possess polarization-dependent optical properties. That makes it difficult to design gratings with high diffraction efficiencies for arbitrary polarizations. Following the concept reported in literature [T. Clausnitzer, et al., Proc. SPIE 5252, 174-182 (2003)], we show how to analyze the polarization-dependent property of gratings rigorously, as well as how to use parametric optimization to design polarization-independent gratings with high diffraction efficiency.
VirtualLab Fusion Configuration
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VirtualLab Fusion
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Grating Package
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Use Case
Ultra-Sparse Dielectric Nano-Wire Grid Polarizer
The polarization-dependent properties of ultra-sparse dielectric nanowire grids are analyzed by using the Fourier modal method (FMM, also known as RCWA).
Use Case
Rigorous Analysis of Nanopillar Metasurface Building Block
With the rigorous Fourier modal method (FMM), we analyze the effects, especially the phase modulation, of nanopillar structures with varying diameters - the building blocks of metalenses.
Use Case
Parametric Optimization and Tolerance Analysis of Slanted Gratings
With the Fourier modal method (FMM) as the kernel on which parametric optimization a slanted grating is designed to achieve high diffraction efficiency.
Tutorial
Polarization Analyzer
This tutorial demonstrates the capabilities of the Polarization Analyzer for the analysis and optimization of grating structures.
Tutorial
Configuration of Grating Structures by Using Interfaces
In VirtualLab Fusion, grating structures are configured in a “stack”, which can be constructed with either a sequence of interfaces or special media, depending on the geometry of the grating.