In this work, we analyze modified bowtie nanoantennas with polynomial sides in the excitation and emission regimes. In the excitation regime, the antennas are illuminated by an incident plane wave, and in the emission regime, the excitation is fulfilled by infinitesimal electric dipole positioned in the gap of the nanoantennas. Several antennas with different sizes and polynomial order were numerically analyzed by method of moments. The results show that these novel antennas possess a controllable resonance by the polynomial order and good characteristics of near field enhancement and confinement for applications in enhancement of spontaneous emission of a single molecule.
2. Wang, H., C. T. Chong, and L. Shi, "Optical antennas and their potential applications to 10 terabit/in recording," Opt. Data Storage Top. Meet., 16-18, 2009.
3. Sqalli, O., I. Utke, P. Hoffmann, and F. M.Weible, "Gold elliptical nanoantennas as probes for near field optical microscopy," J. of Appl. Physics, Vol. 92, 1078-1083, 2002.
4. Lyshevski, S. E. and M. A. Lyshevski, "Nano- and microopto-electromechanical systems and nanoscale active optics," Third IEEE Conf. on Nanotechnology, 2003.
5. Huang, J. S., T. Feichtner, P. Biagioni, and B. Hecht, "Impedance matching and emission properties of nanoantennas in an optical nanocircuit," Nano Lett., Vol. 9, 1897-1902, 2009.
6. Fromm, D. P., A. Sundaramurthy, A. Kinkhabwala, P. J. Schck, G. S. Kino, and W. E. Moerner, "Exploring the chemical enhancement for surface-enhanced Raman scattering with Au bowtie nanoantennas," The J. of Chem. Phi., Vol. 124, 2006.
7. Parajo, M. F. G., "Optical antennas focus in on biology," Nat. Phot., Vol. 2, 201-203, 2008.
8. Mhlschlegel, P., et al., "Resonant optical antennas," Science, Vol. 308, 1607-1609, 2005.
9. Fischer, H. and O. J. F. Martin, "Engineering the optical response of plasmonic nanoantennas," Opt. Express, Vol. 16, 9144-9154, 2008.
10. Liaw, J. W., "The quantum yield of a metallic nanoantenna," Appl. Phys. A, Vol. 89, No. 10, 357-362, 2007.
11. Giannini, V., J. A. Sánchez-Gil, O. L. Muskens, and J. G. Rivas, "Electrodynamic calculations of spontaneous emission coupled to metal nanostructures of arbitrary shape: Nanoantenna-enhanced fluorescence," J. Opt. Soc. Am. B, Vol. 26, 1569-1577, 2009.
12. Kern, A. M. and O. J. F. Martin, "Excitation and reemission of molecules near realistic plasmonic nanoestructures," Nano Lett., Vol. 11, 482-487, 2011.
13. Taminiau, T. H., F. D. Stefani, and N. F. V. Hulst, "Enhanced directional excitation and emission of single emitters by a nano-optical Yagi-Uda antenna," Opt. Express, Vol. 16, 16858-16866, 2008.
14. Wu, Y. M., L. W. Li, and B. Liu, "Geometric effects in designing bow-tie nanoantenna for optical resonance investigation," Asia-Pacific Int. Symp. on Electromagnetic Compatibiliy, 1108-1111, 2010.
15. McMahon, J. M., S. K. Gray, and G. C. Schatz, "Optical properties of nanowires dimers with a spatially nonlocal dielectric function," Nano Lett., Vol. 10, 3473-3481, 2010.
16. Liaw, J. W., "Analysis of a bowtie nanoantenna for the enhancement of spontaneous emission," IEEE J. Selec. Top. Qua. Elec., Vol. 14, 1441-1447, 2008.
17. Kinkhabwala, A., et al., "Large single-molecule fluorescence enhancements produced by a bowtie nanoantenna," Nat. Photonics, Vol. 3, 654-657, 2009.
18. Livesay, D. E. and K. M. Chen, "Electromagnetic fields induced inside arbitrary shaped biological bodies," IEEE Trans. Micro. Theo. Thec., Vol. 22, 1273-1280, 1974.
19. Girard, C., E. Dujardin, G. Baffou, and R. Quidant, "Shaping and manipulation of light fields with bottom-up plasmonic structures," New J. of Physics, Vol. 10, 105016, 2008.
20. Gu, Y., J. Li, Q. J. F. Martin, and Q. Gong, "Solving surface plasmon resonances and near field in metallic nanostructures: Green's matrix method and its applications," Chinese Science Bulletin, Vol. 55, 2608-2617, 2010.
21. Ewe, W. B., H. S. Chu, E. P. Li, and E. W. Li, "Investigation of surface plasmon resonance of nanoparticles using volume integral equation," Proc. Asia-Pacific Microwave Conference, 2007.
22. Giannini, V. and J. A. S. Gil, "Calculations of light scattering from isolated and interacting metallic nanowires of arbitrary cross section by means of Green's theorem surface integral equations in parametric form," J. Opt. Soc. Am. A, Vol. 24, 2822-2830, 2007.
23. Yang, Z. Y., et al., "FDTD for plasmonics: Applications in enhanced Raman spectroscopy," Chinese Science Bulletin, Vol. 55, 2635-2642, 2010.
24. Draine, B. D. and P. J. Flatau, "Discrete-dipole approximation for scattering calculations," J. Opt. Soc. Am. A, Vol. 11, 1491-1499, 1994.
25. Wu, Y. M., L. W. Li, and B. Liu, "Gold bow-tie shaped aperture nanoantenna: Wide band near-field resonance and far-field radiation," IEEE Trans. on Magnetics, Vol. 46, 1918-1921, 2010.
26. Costa, K. Q. and V. Dmitriev, "Comparative analysis of circular and triangular gold nanodisks for field enhancement applications," J. of Microwaves, Optoelectronics and Electromagnetic Applications, Vol. 9, 123-130, 2010.
27. Balanis, C. A., Antenna Theory: Analysis and Design, John Wiley & Sons, Inc., New Jersey, 2005.