Rigorous Full-Vectorial Beam Propagation Analysis of Second-Harmonic Generation in Zinc Oxide Waveguides

Wijeratne, I. N. M.; Kejalakshmy, N.; Rahman, B. M. A.; Grattan, K. T. V.

doi:10.1109/jphot.2013.2256115

Cited by 3 publications

(1 citation statement)

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“…The locally enhanced electromagnetic field near the plasmonic nanostructures can be used in various applications ranging from solar cells [1] to bio-probe based imaging [2], surface enhanced Raman scattering (SERS) [3], and cancer therapy [4]. In addition to the enhanced the local electronic field, researchers are currently devoting more attention to optical frequency upconversion based on LSPR, e.g., second harmonic generation [5]- [14], third harmonic generation (THG) [15]- [20], and four-wave mixing [21]- [23]. These optical upconversion effects by using LSPR can be widely applied in various fields.…”

Section: Introductionmentioning

confidence: 99%

Significantly Enhanced Third Harmonic Generation Using Individual Au Nanorods Coated With Gain Materials

et al. 2015

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We propose a novel design to enhance third harmonic generation (THG) using individual Au nanorods (NRs) coated with gain materials. The present design avoids the use of conventional gap systems, where complicated semiconductor techniques must be used in order to realize the corresponding high-resolution planar structures. As such, this design can contribute to a significant THG enhancement from nanoparticles; this THG is especially favorable for many applications (e.g., photovoltaic devices, bioimaging, and therapy). We perform numerical simulations using a finite-difference time domain (FDTD) in order to identify the origin of the enhanced nonlinear response based on the present system. In addition, we present an effective method to characterize the third harmonics by using Fourier analysis separating them from the excited light. The results show that the THG enhancement of the gain-assisted Au NR with a critical gain coefficient is one to two orders of magnitude greater than the highest values reported for gap THG systems.

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