Imaging of THz waves in 2D photonic crystal structures embedded in a slab waveguide
Name
Peier-2010-Imaging of THz waves in 2D photonic crystal.pdf
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3.29 MB
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Author(s)
Peier, P.
Merbold, H.
Pahinin, V.
Nelson, Keith Adam
Feurer, T.
Date Issued
January 2010
Journal
New Journal of Physics
Publisher
Institute of Physics Publishing
Citation
Peier, P et al. “Imaging of THz Waves in 2D Photonic Crystal Structures Embedded in a Slab Waveguide.” New Journal of Physics 12.1 (2010): 013014. Web.
Version
Final published version
Abstract
We present space- and time-resolved simulations and measurements of single-cycle terahertz (THz) waves propagating through two-dimensional (2D) photonic crystal structures embedded in a slab waveguide. Specifically, we use a plane wave expansion technique to calculate the band structure and a time-dependent finite-element method to simulate the temporal evolution of the THz waves. Experimentally, we measure the space–time evolution of the THz waves through a coherent time-resolved imaging method. Three different structures are laser machined in LiNbO3 crystal slabs and analyzing the transmitted as well as the reflected THz waveforms allows determination of the bandgaps. Comparing the results with the calculated band diagrams and the time-dependent simulations shows that the experiments are consistent with 3D simulations, which include the slab waveguide geometry, the birefringence of the material, and a careful analysis of the excited modes within the band diagrams.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
Terms of Use
Creative Commons Attribution 3.0
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1088/1367-2630/12/1/013014
