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Investigation of Terahertz Wire Grid Polarizers

Srivastava, Prashant (2018) Investigation of Terahertz Wire Grid Polarizers. Masters thesis, Indian Institute of Science Education and Research Kolkata.

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    Abstract

    This thesis is a study of the interaction of Terahertz (THz) radiation with various rectangular metallic gratings in free-space and substrates. Despite many new and useful applications of THz, this regime is the least explored regions of EM spectrum. The pri- mary reasons are that these radiations are hard to produce and detect. Also, they are heavily attenuated by Earth's atmosphere. THz passing through carefully engineered structures can exhibit extraordinary optical transmission (EOT). These structures can be used to improve the performance of Ter- ahertz detectors. In this thesis, such structures are numerically investigated to design gold and silicon wire-gratings which exhibit EOT, acting as filters and polarizers in THz regime.

    Item Type: Thesis (Masters)
    Additional Information: Supervisor: Dr. Kamaraju Natarajan
    Uncontrolled Keywords: EM spectrum.; EOT; Extraordinary Optical Transmission; Finite-Difference Time-Domain Method; Terahertz Radiation; Terahertz Wire-Grid Polarizers
    Subjects: Q Science > QC Physics
    Divisions: Department of Physical Sciences
    Depositing User: IISER Kolkata Librarian
    Date Deposited: 07 Dec 2018 09:27
    Last Modified: 07 Dec 2018 09:27
    URI: http://eprints.iiserkol.ac.in/id/eprint/749

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