Features
- Excellent performance at a high repetition rate
- Measurement range from UV to MIR
- Market-leading sensitivity
- Modules for time-resolved, and multi-pulse experiments
- High-level automation in a compact footprint
- Reflection mode
The HARPIA comprehensive spectroscopy system performs a variety of sophisticated time-resolved spectroscopic measurements in a compact footprint. It offers an intuitive user experience and easy day-to-day maintenance meeting the needs of today’s scientific applications. Extension modules and customization options tailor the HARPIA system to specific measurement needs.
The system is built around the HARPIA-TA transient absorption spectrometer and can be expanded using time-correlated single-photon counting, Kerr gate and fluorescence upconversion (HARPIA-TF), third beam delivery (HARPIA-TB), and microscopy (HARPIA-MM) modules. HARPIA is designed for easy switching between measurement modes and comes with dedicated data acquisition and analysis software. Each module is contained in a monolithic aluminum body ensuring excellent optical stability and minimal optical path lengths.
For a single-supplier solution, the HARPIA spectroscopy system is combined with a PHAROS or a CARBIDE laser together with ORPHEUS series OPAs. HARPIA also supports Ti:sapphire lasers with TOPAS series OPAs.
- Transient absorption and reflection in bulk and microscopy
- Multi-pulse transient absorption and reflection
- Time resolved fluorescence: Femtosecond fluorescence upconversion, Kerr gate, TCSPC
- Femtosecond stimulated Raman scattering (FSRS)
- Intensity-dependent transient absorption and reflection
- Flash photolysis – nanosecond transient absorption
- Charge transfer (electron, proton)
- Solvation
- Vibrational relaxation
- Exciton energy transfer
- Photoreaction dynamics
- Higher repetition rates available; contact sales@lighton.com for details.
- Spectral range is extendable to NIR; contact sales@lighton.com for details.
- High-speed detector available (< 50 ps); contact sales@lighton.com for details.
- Maximum measurement range depends on the phosphorescence signal.
- White light generation has axial color at focus and wavelength-dependent mode size and NA. Focused white light will exhibit focus shift and spot size variation depending on the chosen spectral range. Polychromatic spot size is given at full spectral range, monochromatic is at 500 nm with a 10 nm bandwidth.
- Depends on the objective used.
- Without external spectrograph.
- External sample placement option is available.











A single software solution for all measurement modes, featuring:
- User-friendly interface
- Measurement presets
- Measurement noise suppression
- Diagnostics and data export
- Continuous support and updates
- API for remote experiment control using third-party software (LabVIEW, Python, MATLAB)
An ultrafast spectroscopy data analysis software, featuring:
- Advanced data wrangling: slicing, merging, cropping, smoothing, fitting, etc.
- Advanced global and target analysis
- Probe spectral chirp correction, calibration and deconvolution
- Support for 3D data sets (2D electronic spectroscopy, fluorescence lifetime imaging)
- Publication-ready figure preparation and data export
The HARPIA spectroscopy system achieves an excellent signal‑to‑noise ratio at high repetition rate and low energy excitation conditions. The graphs below compare the signal-to-noise ratio (SNR) of difference absorption spectra obtained with a Ti:Sapphire laser operating at 1 kHz and a PHAROS laser operating at 64 kHz with the same acquisition time.
Kerr Gate Measurement Data Samples
Fluorescence Upconversion Measurement Data Samples
TCSPC Measurement Data Samples
Femtosecond stimulated Raman spectroscopy (FSRS) Measurement Data Samples
Pump-dump-probe Measurement Data Samples
Improved Crystallization of High-Solubility Non-Fullerene Electron Acceptors for Enhanced Photoelectric Conversion Efficiency: Effect of the Terminal Group
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Intramolecular and Intermolecular Interaction Switching in the Aggregates of Perylene Diimide Trimer: Effect of Hydrophobicity
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Solution-grown BiI/BiI3 van der Waals heterostructures for sensitive X-ray detection
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Atomic structure of a seed-sized gold nanoprism
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Charge Photogeneration and Recombination in Fluorine-Substituted Polymer Solar Cells
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Cobalt(III) Carbene Complex with an Electronic Excited-State Structure Similar to Cyclometalated Iridium(III) Compounds
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Dopamine Photochemical Behaviour under UV Irradiation
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Effects of polyethylene oxide particles on the photo-physical properties and stability of FA-rich perovskite solar cells
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Electron–Hole Binding Governs Carrier Transport in Halide Perovskite Nanocrystal Thin Films
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Evidence and Governing Factors of the Radical-Ion Photoredox Catalysis
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