Nanoengineering of a negative-index binary-staircase lens for the optics regime

Casse, B. D. F. and Banyal, R. K. and Lu, W. T. and Huang, Y. J. and Selvarasah, S. and Dokmeci, M. and Sridhar, S.. (2008) Nanoengineering of a negative-index binary-staircase lens for the optics regime. Applied Physics Letters, 92 (24). p. 243122. ISSN 00036951

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We show that a binary-staircase optical element can be engineered to exhibit an effective negative index of refraction, thereby expanding the range of optical properties theoretically available for future optoelectronic devices. The mechanism for achieving a negative-index lens is based on exploiting the periodicity of the surface corrugation. By designing and nanofabricating a planoconcave binary-staircase lens in the InP/InGaAsP platform, we have experimentally demonstrated at 1.55 μm that such negative-index concave lenses can focus plane waves. The beam propagation in the lens was studied experimentally and was in excellent agreement with the three-dimensional finite-difference time-domain numerical simulations.

Item Type: Article
Uncontrolled Keywords: Photonic crystals,
InterNano Taxonomy: Nanoscale Objects and Nanostructured Materials > Nanocomposites > Optical
Collections: Nanomanufacturing Research Collection
Depositing User: Moureen Kemei
Date Deposited: 12 May 2010 18:58
Last Modified: 12 May 2010 18:58

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