Regensburg 2016 – scientific programme

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HL: Fachverband Halbleiterphysik

HL 1: Tutorial: Plasmonics

HL 1.4: Tutorial

Sunday, March 6, 2016, 18:00–18:30, H15

Complex functional plasmonics: Ultrafast hybrid nonlinear plasmonics — •Harald Giessen — 4th Physics Institute and Research Center SCoPE, University of Stuttgart

We are going to present several different concepts on ultrafast nonlinear hybrid plasmonics. Both second- and third-harmonic processes are studied. The first concept incorporates strong local nonlinearities such as nanocrystals of nonlinear materials like LiNbO3 and ITO into gaps of plasmonic nanoantennas [1]. The second concept investigates the nonlinearities of the metals itself, particularly the influence of the localized density of states in the d-band and its influence on the nonlinear optical processes [2]. The third concept uses Miller's rule to enhance the optical nonlinearity by tailoring the linear response such that the first order susceptibility is resonant with the second harmonic light [3]. This leads to a strong and reproducible enhancement of the nonlinear response. Our general method is particularly well suited to incorporate also localized quantum emitters into the gap and investigate nonlinear optical processes on the single particle level.

[1] B. Metzger et al., Nano Lett. 14, 2867 (2014). [2] B. Metzger et al., Opt. Lett. 39, 5293 (2014). [3] B. Metzger et al., Nano Lett. 15, 3917 (2015).