Direct experimental visualization of waves and band structure in 2D photonic crystal slabs
Author(s)Ofori-Okai, Benjamin Kwasi; Sivarajah, Prasahnt; Werley, Christopher A.; Teo, Stephanie M.; Nelson, Keith Adam
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We demonstrate for the first time the ability to perform time resolved imaging of terahertz (THz) waves propagating within a photonic crystal (PhC) slab. For photonic lattices with different orientations and symmetries, we used the electro-optic effect to record the full spatiotemporal evolution of THz fields across a broad spectral range spanning the photonic band gap. In addition to revealing real-space behavior, the data let us directly map the band diagrams of the PhCs. The data, which are in good agreement with theoretical calculations, display a rich set of effects including photonic band gaps, eigenmodes and leaky modes.
DepartmentMassachusetts Institute of Technology. Department of Chemistry; Massachusetts Institute of Technology. School of Science
New Journal of Physics
Institute of Physics Publishing
Ofori-Okai, Benjamin K, Prasahnt Sivarajah, Christopher A Werley, Stephanie M Teo, and Keith A Nelson. “Direct Experimental Visualization of Waves and Band Structure in 2D Photonic Crystal Slabs.” New Journal of Physics 16, no. 5 (May 1, 2014): 053003.
Final published version