Dataset for "Chiroptical third-harmonic scattering spectroscopy of Ag and Si nanohelices"
This dataset provides broadband third‑harmonic scattering (THS) spectra of chiral Ag and Si nanohelices under tunable near‑infrared excitation across multiple discrete wavelengths. For both forward and right‑angle scattering geometries, the dataset includes nonlinear ellipticity values and power‑dependent measurements confirming third‑order nonlinear scaling. Ag nanohelices exhibit enantiomer‑dependent mirror‑image ellipticity, whereas Si nanohelices show geometry‑specific spectral signatures. The dataset also contains SEM images of the samples and linear circular dichroism (CD) characterization for both material systems.
Cite this dataset as:
Kerrigan, B.,
Ji, R.,
Valev, V.,
2026.
Dataset for "Chiroptical third-harmonic scattering spectroscopy of Ag and Si nanohelices".
Bath: University of Bath Research Data Archive.
Available from: https://doi.org/10.15125/BATH-01643.
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Data
THS_spectroscopy_data.zip
application/zip (1MB)
Creative Commons: Attribution 4.0
Broadband Nonlinear chiroptical spectroscopy data
Creators
Brad Kerrigan
University of Bath
Ruidong Ji
University of Bath
Ventsislav Valev
University of Bath
Documentation
Data collection method:
Linear and Nonlinear Optical Characterization: Linear CD spectra (300–1000 nm) of Ag and Si samples were measured at room temperature using a Chirascan CD spectrometer and background corrected. Third-harmonic scattering was performed using a Ti:Sapphire–pumped OPO (930–2500 nm, 200 fs). Incident power and polarization were controlled using waveplates and polarizers, with circularly polarized light focused onto the sample. The third-harmonic signal was filtered, collected in forward or right-angle geometries, and detected with a photomultiplier tube. Power-dependent and spectral measurements were obtained by varying incident power or excitation wavelength, respectively.
Technical details and requirements:
Linear CD: Chirascan CD spectrometer 20C Nonlinear Characterisation: Mai tai fs pulsed laser seeding an Inspire HF100 OPO
Funders
Engineering and Physical Sciences Research Council
https://doi.org/10.13039/501100000266
Industrial CASE Account – University of Bath 2019
EP/T517495/1
Engineering and Physical Sciences Research Council
https://doi.org/10.13039/501100000266
CHIRONN: CHIROptical Nonlinearity in Nanoparticles
UKRI1462
Leverhulme Trust
https://doi.org/10.13039/501100000275
PERSEUS: molecular Polarizability Established by Rayleigh Scattering Enhancement and Ultra-Spectral analysis
RPG-2022-344
Publication details
Publication date: 4 August 2026
by: University of Bath
Version: 1
DOI: https://doi.org/10.15125/BATH-01643
URL for this record: https://researchdata.bath.ac.uk/1643
Related papers and books
Kerrigan, B., Ji, R., Kilic, U., Nedderman, O. R. J., Wimer, S., Schubert, M., Argyropoulos, C., Schubert, E., Pantoş, G. D., and Valev, V. K., 2026. Chiroptical third-harmonic scattering spectroscopy of Ag and Si nanohelices [Invited]. Journal of the Optical Society of America B, 43(10), C77. Available from: https://doi.org/10.1364/josab.599559.
Contact information
Please contact the Research Data Service in the first instance for all matters concerning this item.
Contact person: Ventsislav Valev
Faculty of Science
Physics
Research Centres & Institutes
Centre for Photonics and Photonic Materials
