Enhanced localized surface plasmonic resonances in dielectric photonic band gap structures: Fabry-Perot nanocavities and photonic crystal slot waveguides

Dihan Hasan; Alan X. Wang

doi:10.1117/12.2005549

21 February 2013 Enhanced localized surface plasmonic resonances in dielectric photonic band gap structures: Fabry-Perot nanocavities and photonic crystal slot waveguides

Dihan Hasan, Alan X. Wang

Author Affiliations +

Proceedings Volume 8632, Photonic and Phononic Properties of Engineered Nanostructures III; 863203 (2013) https://doi.org/10.1117/12.2005549
Event: SPIE OPTO, 2013, San Francisco, California, United States

Abstract

We describe approaches to enhance localized surface plasmons by placing metallic nanoparticles into two different structures: (i) Fabry-Perot (F-P) resonant cavities, and (ii) Photonic crystal slot waveguides. Through synchronization of the plasmonic and resonant modes, electric field at the surface of the nanoparticles is enhanced by a factor of 4~20 compared with the nanoparticles in free space, depending on the device structure and coupling mechanism. We report key differences between the F-P enhancement and the slow-light enhancement to the plasmonic effect in details. This theoretical investigation reveals a new method to strengthen plasmonic resonances and suggests that the sensitivity of existing plasmonic sensors can be further improved if they are integrated with dielectric resonant photonic devices.

Citation Download Citation

Dihan Hasan and Alan X. Wang "Enhanced localized surface plasmonic resonances in dielectric photonic band gap structures: Fabry-Perot nanocavities and photonic crystal slot waveguides", Proc. SPIE 8632, Photonic and Phononic Properties of Engineered Nanostructures III, 863203 (21 February 2013); https://doi.org/10.1117/12.2005549

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