Linear and nonlinear optics of active terahertz metasurfaces

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• Professor Dan Mittleman, Brown University
• Friday 09 March 2018, 14:00-15:00
• Lecture Theatre 2, Department of Chemical Engineering and Biotechnology, West Cambridge Site.

If you have a question about this talk, please contact Axel Zeitler.

In the terahertz region of the electromagnetic spectrum, there has been a long-standing interest in the development of devices and components to manipulate free-space beams. Metamaterials offer a promising strategy for enabling many capabilities that are otherwise challenging, such as filtering and modulation. In most cases, these structures are realized as two-dimensional meta-surfaces, a class of metamaterials where the scattering elements are arranged in a planar array. Because the elements are deposited on a dielectric surface, the optical properties can be modulated by actively modifying the properties of the surface. This general approach has revealed a wealth of new phenomena, opening up many possibilities for both linear and non-linear optical interactions in the terahertz range. In this presentation, several examples will be described, including spatial light modulation and active electrical control of terahertz optical nonlinearity.

This talk is part of the Chemical Engineering and Biotechnology occasional seminars series.

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