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Conferences > ACPC > 2014 > ATh1A > ATh1A.3

Generation of terahertz vortices by using metasurface with polarization dependent slits

Hailong Zhou, Jianji Dong, and Xinliang Zhang

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Abstract

We design a metasurface with circular subwavelength slits to generate THz orbital angular momentum beam. The mode purity can reach 0.92 and the polarization extinction ratio keep above 20 dB over the most bandwidth ranging from 0.3 to 3THz.

© 2014 Optical Society of America

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