Dicken, Matthew J. and Aydin, Koray and Pryce, Imogen M. and Sweatlock, Luke A. and Boyd, Elizabeth M. and Walavalkar, Sameer and Ma, James and Atwater, Harry A. (2009) Frequency tunable near-infrared metamaterials based on VO_2 phase transition. Optics Express, 17 (20). pp. 18330-18339. ISSN 1094-4087 http://resolver.caltech.edu/CaltechAUTHORS:20091022-101838485
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Engineering metamaterials with tunable resonances from mid-infrared to near-infrared wavelengths could have far-reaching consequences for chip based optical devices, active filters, modulators, and sensors. Utilizing the metal-insulator phase transition in vanadium oxide (VO_2), we demonstrate frequency-tunable metamaterials in the near-IR range, from 1.5 - 5 microns. Arrays of Ag split ring resonators (SRRs) are patterned with e-beam lithography onto planar VO_2 and etched via reactive ion etching to yield Ag/VO_2 hybrid SRRs. FTIR reflection data and FDTD simulation results show the resonant peak position red shifts upon heating above the phase transition temperature. We also show that, by including coupling elements in the design of these hybrid Ag/VO_2 bi-layer structures, we can achieve resonant peak position tuning of up to 110 nm.
|Additional Information:||© 2009 Optical Society of America. Original Manuscript: August 11, 2009. Manuscript Accepted: September 18, 2009. Revised Manuscript: September 17, 2009. Published: September 25, 2009. We acknowledge financial support from the National Science Foundation under Grant DMR 0606472, and the Army Research Office; portions of this work were performed in facilities sponsored by the Center for Science and Engineering of Materials, and NSF MRSEC. We gratefully acknowledge critical support and infrastructure provided for this work by the Kavli Nanoscience Institute at Caltech. I. M. P. acknowledges the support of a National Science Foundation Graduate Fellowship. We also gratefully acknowledge the help of Professor George Rossman for IR facilities and measurements.|
|Group:||Kavli Nanoscience Institute|
|Classification Code:||OCIS codes: (160.3918) Metamaterials; (310.6845) Thin film devices and applications|
|Official Citation:||Matthew J. Dicken, Koray Aydin, Imogen M. Pryce, Luke A. Sweatlock, Elizabeth M. Boyd, Sameer Walavalkar, James Ma, and Harry A. Atwater, "Frequency tunable near-infrared metamaterials based on VO2 phase transition," Opt. Express 17, 18330-18339 (2009) http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-17-20-18330|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||George Porter|
|Deposited On:||22 Oct 2009 17:42|
|Last Modified:||26 Dec 2012 11:29|
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