Skip to main content
Eberly College of Science Event
event
CAMP Seminar: Over 100-THz bandwidth selective difference frequency generation at LaAlO3/SrTiO3 nanojunctions
Add to Calendar 2019-11-15T15:00:00 2019-11-15T16:00:00 America/New_York CAMP Seminar: Over 100-THz bandwidth selective difference frequency generation at LaAlO3/SrTiO3 nanojunctions

CAMP Seminar

Davey Lab (339)
Start DateFri, Nov 15, 2019
10:00 AM
to
End DateFri, Nov 15, 2019
11:00 AM
Presented By
Professor Jeremy Levy, University of Pittsburgh

CAMP Seminar

The ability to combine continuously tunable narrow-band terahertz (THz) generation that can access both the far-infrared and mid-infrared regimes with nanometer-scale spatial resolution is highly promising for identifying underlying light-matter interactions and realizing selective control of rotational or vibrational resonances in nanoparticles or molecules. Here, we report selective difference frequency generation with over 100 THz bandwidth via femtosecond optical pulse shaping. The THz emission is generated at nanoscale junctions at the interface of

LaAlO3/SrTiO3 (LAO/STO) that is defined by conductive atomic force microscope lithography, with the potential to perform THz spectroscopy on individual nanoparticles or molecules. Numerical simulation of the time-domain signal facilitates the identification of components that contribute to the THz generation. This ultra-wide-bandwidth tunable nanoscale coherent THz source transforms the LAO/STO interface into a promising platform for integrated lab-on-chip optoelectronic devices with various functionalities.