Design of electro-optic photonic crystal structure for subdiffraction imaging over the entire visible wavelength range

Rajib Ghosh; K. K. Ghosh; Rajib Chakraborty

doi:10.1117/1.OE.55.12.127101

7 December 2016 Design of electro-optic photonic crystal structure for subdiffraction imaging over the entire visible wavelength range

Rajib Ghosh, K. K. Ghosh, Rajib Chakraborty

Author Affiliations +

Optical Engineering, Vol. 55, Issue 12, 127101 (December 2016). https://doi.org/10.1117/1.OE.55.12.127101

Abstract

A photonic crystal (PhC)-based structure is designed to achieve subdiffraction imaging over the entire visible wavelength range. The designed structure is a two-dimensional triangular lattice PhC formed by making circular holes in a 100-nm film of electro-optic lithium niobate (LiNbO₃) grown on indium tin oxide. The analysis is done by using MEEP and MPB softwares. This shows that by applying a voltage within ±460 V, equal frequency contour can be obtained for specific values of frequencies, which corresponds to wavelength (λ) in visible range (389 to 757 nm). This indicates that the designed structure will have effective negative refraction and hence subdiffraction imaging over the entire visible wavelength (frequency) range. By placing this type of PhC structure in front of the objective, the resolution of the conventional imaging system can be increased.

Citation Download Citation

Rajib Ghosh, K. K. Ghosh, and Rajib Chakraborty "Design of electro-optic photonic crystal structure for subdiffraction imaging over the entire visible wavelength range," Optical Engineering 55(12), 127101 (7 December 2016). https://doi.org/10.1117/1.OE.55.12.127101

Published: 7 December 2016

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