Surface multiplasmonics for optical sensing

Stephen E. Swiontek; Drew P. Pulsifer; Akhlesh Lakhtakia

doi:10.1117/12.2022273

30 September 2013 Surface multiplasmonics for optical sensing

Stephen E. Swiontek, Drew P. Pulsifer, Akhlesh Lakhtakia

Proceedings Volume 8833, Tribute to H. John Caulfield; 883309 (2013) https://doi.org/10.1117/12.2022273
Event: SPIE Optical Engineering + Applications, 2013, San Diego, California, United States

Abstract

Multiple surface plasmon-polariton (SPP)-wave modes can be guided by the interface of a metal and a chiral sculptured thin film (STF). Theory predicts that the angular locations of SPP-wave modes will be shifted if the void regions of the chiral STF are infiltrated with a liquid. Therefore, chiral STFs of lanthanum fluoride were fabricated and employed as a partnering dielectric material to an aluminum thin film to guide multiple SPP-wave modes. The SPP-wave modes shifted to higher angular locations when the refractive index of the infiltrant was increased, exhibiting sensitivity comparable to state-of-research values. Thereby, surface multiplasmonics was exploited for optical sensing.

Citation Download Citation

Stephen E. Swiontek, Drew P. Pulsifer, and Akhlesh Lakhtakia "Surface multiplasmonics for optical sensing", Proc. SPIE 8833, Tribute to H. John Caulfield, 883309 (30 September 2013); https://doi.org/10.1117/12.2022273

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KEYWORDS

Interfaces

Metals

Dielectrics

Thin films

Optical sensing

Prisms

Waveguides

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