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Tuesday, April 3, 2012

Physics Colloquium: Plasmonic Terahertz Waveguides

Description:
Concentrating optical energy into an ultra-small spot beyond the diffraction limit has long been an interesting topic in photonics. For terahertz radiation, this challenge is of particular importance, to meet the growing interest in imaging and spectroscopy of materials with a size below the sub-millimeter scale of the free-space wavelength. One of the most exciting new approaches is to use subwavelength-sized plasmonic waveguides, based on the excitation of localized surface plasmon polaritons (SPPs) on metallic surfaces. While most of the studies on plasmonic waveguides have been focused in the optical regime, subwavelength plasmonic waveguides in the THz spectral regime have also recently attracted a great deal of attention. Daniel Mittleman, Rice University, will discuss several terahertz waveguide structures in the context of plasmonic waveguiding, and show how this understanding can enable deep subwavelength confinement of broadband terahertz signals. {Will appear in FYI on Apr 3, 2012
Start Time:
4:00 PM
End Time:
5:00 PM
Room:
1410
Common Location Name:
Physics
Web Address:
www.umdphysics.umd.edu/events/physicscolloquia.html
Other Contact Information:
Carole Cuaresma Kiger +1 301 405 5945 ccuaresm@umd.edu


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