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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editor: Gregory W. Faris
  • Vol. 1, Iss. 4 — Apr. 12, 2006

Tunable superlensing by a mechanically controlled photonic crystal

Qi Wu, Ethan Schonbrun, and Wounjhang Park  »View Author Affiliations


JOSA B, Vol. 23, Issue 3, pp. 479-484 (2006)
http://dx.doi.org/10.1364/JOSAB.23.000479


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Abstract

We investigated negative refraction and subwavelength imaging by a mechanically tunable photonic crystal (PC) slab. A honeycomb-structured PC composed of a silicon–polyimide membrane was used because it exhibits isotropic negative refraction within the second photonic band. Using the finite-difference time-domain (FDTD) method, we demonstrated focusing properties of the PC lenses at various frequencies and mechanical stresses. Analyses based on a ray optics model and equifrequency surface also confirmed the behavior observed by the FDTD simulations. These results suggested a mechanically tunable superlens, whose achievable frequency bandwidth was 12.9% of the center frequency for a mechanical stress of ± 10 % .

© 2006 Optical Society of America

OCIS Codes
(160.4670) Materials : Optical materials
(260.2110) Physical optics : Electromagnetic optics
(350.3950) Other areas of optics : Micro-optics

ToC Category:
Metamaterials

History
Original Manuscript: July 18, 2005
Revised Manuscript: September 13, 2005
Manuscript Accepted: September 22, 2005

Virtual Issues
Vol. 1, Iss. 4 Virtual Journal for Biomedical Optics

Citation
Qi Wu, Ethan Schonbrun, and Wounjhang Park, "Tunable superlensing by a mechanically controlled photonic crystal," J. Opt. Soc. Am. B 23, 479-484 (2006)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=josab-23-3-479

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