Session Index

Nanophotonic Materials and Devices

Nonlinear Nanophotonics and Nanolasers
Saturday, Dec. 5, 2015  09:00-10:30
Chair: Po-Tsung Lee,Chen-Bin (Robin) Huang
Room: Delta 105(1F)
09:00 - 09:15 Paper No.  2015-SAT-S0103-O001
Dan Berco A Dipole Interaction Based Numerical Method for Second Harmonic Generation Calculations in Nano Structures

A method to second harmonic generation analysis of arbitrary shape and composition nano structures by discrete dipole interaction is presented using first principal calculation with the retarded green function. In addition, the non linear interaction of a gold nano shell having a non-centrosymmetric core is demonstrated.

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09:15 - 09:30 Paper No.  2015-SAT-S0103-O002
Hsiang-Ting Lin Plasmonic gold nanorods density dependence in enhanced photoluminescence of the MoS2 atomic layer

We have systematically investigated the localized surface plasmonic resonance enhanced Photoluminescence (PL) of the monolayer MOS2 with varying gold nanorods (Au NRs) densities. The maximum 6.5 fold PL enhancement achieved at the Au NRs density of 40μm^(-2). PL enhancement quench at higher densities have also been observed and modeling explained.

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09:30 - 10:00 Paper No.  2015-SAT-S0103-I001
Invited Speaker:
Markus Lippitz
Shaping the nonlinear near-field of a plasmonic nanostructure

Light scattering at plasmonic nanoparticles and their assemblies has led to a wealth of application in meta-materials and nanooptics. While shaping of fields around nanostructures is widely studied, the influence of the field inside the nanostructures is often overlooked. The linear field distribution inside the structure taken to the third power causes third-harmonic generation, a nonlinear optical response of matter. In this presentation I show how this simple fact can be used to shape complex fields around already a single particle alone. We employ this scheme to switch the third-harmonic emission from a single point source to two spatially separated but coherent sources, as in Young's double slit assembly. We envision applications as diverse as coherently feeding antenna arrays and optical spectroscopy of spatially extended electronic states.

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10:00 - 10:15 Paper No.  2015-SAT-S0103-O003
Surojit Chattopadhyay Managing Plasmons with Enhanced Optical Absorption in Nanosilicon Resonators for Biosensing

We show how to control plasmon field strengths in silver nanoparticles by maximizing the optical absorption in silicon nanowire resonators on which these nanoparticles are dispersed. The efficient plasmons can then be used for biosensing via surface enhanced Raman spectroscopy.

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10:15 - 10:30 Paper No.  2015-SAT-S0103-O004
Tsung-Yu Huang A nanolaser composed of a dielectric sphere

To conquer Ohmic losses and enhance pump absorption efficiency of a nanolaser, we theoretically calculate Mie coefficients of a dielectric sphere and obtain negative effective permittivity and permeability simultaneously at frequencies above around 155 THz under a plane wave excitation with the expected negative Goos-Hänchen effect, thus promoting the pump absorption efficiency in a laser system.

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