Active Photoswitching of Sharp Fano Resonances in THz Metadevices

Manukumara Manjappa; Yogesh Kumar Srivastava; Longqing Cong; Ibraheem Al-Naib; Ranjan Singh

doi:10.1002/adma.201603355

Active Photoswitching of Sharp Fano Resonances in THz Metadevices

Adv Mater. 2017 Jan;29(3). doi: 10.1002/adma.201603355. Epub 2016 Nov 14.

Authors

Manukumara Manjappa^{1

2}, Yogesh Kumar Srivastava^{1

2}, Longqing Cong^{1

2}, Ibraheem Al-Naib³, Ranjan Singh^{1

2}

Affiliations

¹ Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
² Centre for Disruptive Photonic Technologies, The Photonics Institute, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.
³ Biomedical Engineering Department, College of Engineering, University of Dammam, Dammam, 31441, Saudi Arabia.

PMID: 27862423
DOI: 10.1002/adma.201603355

Abstract

Fano resonances offer exciting features in enhancing the non-linearity and sensing capabilities in metamaterial systems. An active photoswitching of Fano resonances in a terahertz metadevice at low optical pump powers is demonstrated, which signifies the extreme sensitivity of the high-quality-factor resonant electric field to the external light illumination.

Keywords: Fano resonances; active control; high quality factor, figure of merit; terahertz metamaterials.