Journal
JOURNAL OF PHYSICS-PHOTONICS
Volume 3, Issue 3, Pages -Publisher
IOP Publishing Ltd
DOI: 10.1088/2515-7647/ac023a
Keywords
quantum sensing; PZT; second harmonic generation; nanorods; time resolved spectroscopy; multiferroics
Categories
Funding
- Air Force Office of Scientific Research [FA9550-17-1-0341]
- DURIP [FA9550-16-1-0358]
- Clare Boothe Luce Program at Virginia Tech
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The nonlinear optical properties of lead zirconate-titanate (Pb0.52Zr0.48TiO3) nanorod arrays grown on Pt-coated Si were studied, with clear signatures of second harmonic generation observed at room temperature. Time-resolved differential reflectivity measurements were performed to study the dynamical properties of photoexcited carriers, with promising results for potential applications in nonlinear photonic devices.
Nonlinear optical properties of poled and unpoled, lead zirconate-titanate (Pb0.52Zr0.48TiO3) nanorod arrays, grown on Pt-coated Si with similar to 200 nm diameter and similar to 600 nm height, were investigated. Clear signatures of second harmonic generations (SHG), from 490-525 nm (2.38-2.53 eV) at room temperature, were observed. Furthermore, time resolved differential reflectivity measurements were performed to study dynamical properties of photoexcited carriers in the range of 690-1000 nm where multiphoton processes were responsible for the photo-excitations. We compared this excitation scheme, which is sensitive mainly to the surface states, to when the photoexcited energy (similar to 3.1 eV) was close to the band gap of the nanorods. Our results offer promises for employing these nanostructures in nonlinear photonic applications.
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