Subwavelength metrology of Al wire grating employing finite difference time domain method and Mueller matrix polarimeter

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 M...

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Bibliographic Details
Main Authors: Adhikari, Achyut, Dev, Kapil, Asundi, Anand
Other Authors: Creath, Katherine
Format: Conference or Workshop Item
Language:English
Published: 2018
Subjects:
Online Access:https://hdl.handle.net/10356/90175
http://hdl.handle.net/10220/47214
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Institution: Nanyang Technological University
Language: English
Description
Summary: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.