Optical tuning of ultra-thin, silicon-based flexible metamaterial membranes in the terahertz regime
- 22 January 2015
- journal article
- Published by Optica Publishing Group in Optical Materials Express
- Vol. 5 (2)
- https://doi.org/10.1364/ome.5.000408
Abstract
We present a fabrication method for flexible optically tunable terahertz metamaterial membranes based on thinning and embedding of commercially available silicon wafers in the metamaterial structure. The resulting membrane thickness of less than 25 mu m allows for quasi etalon-effect free devices which can be designed to show impedance matching to the surrounding air. We fabricated a thin film spectral bandpass filter with a maximal transmission of 85% and a modulation depth upon optical tuning of 98% at an operating frequency of 0.65THz. Further, we discussed the charge carrier dynamics and the requirements for optical tuningKeywords
Funding Information
- German Federal Ministry of Education and Research (13N11905)
This publication has 24 references indexed in Scilit:
- Metamaterial-based gradient index beam steerers for terahertz radiationApplied Physics Letters, 2013
- Frequency tunable terahertz metamaterials using broadside coupled split-ring resonatorsPhysical Review B, 2011
- Optically Implemented Broadband Blueshift Switch in the Terahertz RegimePhysical Review Letters, 2011
- Metamaterial-based gradient index lens with strong focusing in the THz frequency range.Optics Express, 2010
- Active and tunable metamaterialsLaser & Photonics Reviews, 2010
- The Road Ahead for MetamaterialsScience, 2010
- Polarization-independent active metamaterial for high-frequency terahertz modulationOptics Express, 2009
- Experimental demonstration of frequency-agile terahertz metamaterialsNature Photonics, 2008
- Metamaterials in electromagneticsMetamaterials, 2007
- Extremely Low Frequency Plasmons in Metallic MesostructuresPhysical Review Letters, 1996