Terahertz Magnetic Modulator based on Magnetically-Clustered Nanoparticles
Optics
2015-06-22 v1
Abstract
Random orientation of liquid-suspended magnetic nanoparticles (Ferrofluid) gives rise to zero net magnetic orientation. An external magnetic field tends to align them into clusters, leading to a strong linear dichroism on a propagating wave. Using 10 nm-sized Fe3O4, we experimentally realize a polarization-sensitive magnetic modulator operating at terahertz wavelengths. We reached a modulation depth of 66% using a field of 35 mT. The proposed concept offers a solution towards fundamental terahertz magnetic modulators.
Cite
@article{arxiv.1409.4963,
title = {Terahertz Magnetic Modulator based on Magnetically-Clustered Nanoparticles},
author = {Mostafa Shalaby and Marco Peccianti and Yavuz Ozturk and Ibraheem Al-Naib and Christoph P. Hauri and Roberto Morandotti},
journal= {arXiv preprint arXiv:1409.4963},
year = {2015}
}