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American Institute of Physics, Applied Physics Letters, 14(104), p. 141102

DOI: 10.1063/1.4870635

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Ultrafast all-optical switching via coherent modulation of metamaterial absorption

Journal article published in 2014 by Xu Fang, Ming Lun Tseng, Ming Lun Tseng, Jun-Yu Ou ORCID, Kevin F. MacDonald, Din Ping Tsai, Nikolay I. Zheludev
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This paper is available in a repository.

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Abstract

We report on the demonstration of a femtosecond all-optical modulator providing, without nonlinearity and therefore at arbitrarily low intensity, ultrafast light-by-light control. The device engages the coherent interaction of optical waves on a metamaterial nanostructure only 30 nm thick to efficiently control absorption of near-infrared (750-1040 nm) femtosecond pulses, providing switching contrast ratios approaching 3:1 with a modulation bandwidth in excess of 2 THz. The functional paradigm illustrated here opens the path to a family of novel meta-devices for ultra-fast optical data processing in coherent networks. ; Comment: 5 pages, 4 figures