From Event: SPIE Optical Engineering + Applications, 2016
Wire grid polarizers (WGP), are sub-wavelength gratings with applications in display projection
system due to their compact size, wide field of view and long-term stability. Measurement and testing
of these structures are important to optimize their use. This is done by first measuring the Mueller
Matrix of the WGP using a Mueller Matrix Polarimeter. Next the Finite Difference Time Domain
(FDTD) method is used to simulate a similar Mueller matrix thus providing the period and step height
of the WGP. This approach may lead to more generic determination of sub-wavelength structures
including diffractive optical structures.
Achyut Adhikari, Kapil Dev, and Anand Asundi, "Subwavelength metrology of Al wire grating employing finite difference time domain method and Mueller matrix polarimeter," Proc. SPIE 9960, Interferometry XVIII, 99600F (Presented at SPIE Optical Engineering + Applications: August 31, 2016; Published: 28 August 2016); https://doi.org/10.1117/12.2240639.
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