All-Optical Field-Induced Second-Harmonic Generation

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Presentation transcript:

All-Optical Field-Induced Second-Harmonic Generation Applied Optical Physics Group Vanderbilt University Oak Ridge National Laboratory Roderick Davidson OSI-11 2015

Highly tunable processes Potential for optical switching Third-order nonlinearities in plasmonics Plasmonically enhanced 4WM Jan Renger et al. Phys. Rev. Lett. (2010) Highly tunable processes Potential for optical switching Pai-Yen Chen and Andrea Alù Nano Lett. (2011) Frequency conversion Nano-scale imaging AOFISH - OSI-11 2015

Three separate electric fields Linear dependence on applied DC field Third-order SHG Wenshan Cai et al. Science (2011) Three separate electric fields Linear dependence on applied DC field AOFISH - OSI-11 2015

Serrated Nanogaps AOFISH - OSI-11 2015

Multiple pulse generation Phase and polarization control Second-Harmonic Interferometric Pump-Probe (SHIP) Multiple pulse generation Phase and polarization control AOFISH - OSI-11 2015

Orthogonal non-interacting pump and probe The dielectric medium Orthogonal non-interacting pump and probe Thin film dielectric AOFISH - OSI-11 2015

SHIP spectroscopy using PMMA PMMA deposited in the gap SHG versus pump-probe delay Direct probe-plasmon interference PMMA removed from the gap No plasmon interference AOFISH - OSI-11 2015

Single optical cycle SHIP signal Pump power varied Probe power unaltered Maximum plasmonic and optical fields at Maximum plasmonic and minimum optical fields at AOFISH - OSI-11 2015

Nonlinear pump dependence Pump power dependence Nonlinear pump dependence Non-crystalline PMMA AOFISH - OSI-11 2015

Conclusions Enhanced χ(3) effects of dielectric medium Optical characterization of SHG from χ(3) Promising platform for 4WM and phase conjugation AOFISH - OSI-11 2015

Anna Yanchenko Jed Ziegler Benjamin Lawrie Sergey Avanesyan Acknowledgements Anna Yanchenko Jed Ziegler Benjamin Lawrie Sergey Avanesyan Richard Haglund AOFISH - OSI-11 2015