HARPIA ultrafast spectroscopy system performs a wide range 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 modern scientific applications.
HARPIA-TA system, centered around the transient absorption spectrometer, offers additional extension modules and customization options to tailor the HARPIA system to specific measurement needs. It can be expanded with additional modules, including time-correlated single-photon counting (TCSPC), Kerr gating, and fluorescence upconversion (HARPIA-TF), third beam delivery for multi-pulse experiments (HARPIA-TB), and microscopy (HARPIA-MM) modules. Designed for flexibility, HARPIA allows seamless switching between measurement modes and comes with dedicated data acquisition and analysis software. Each module is housed in a robust aluminum enclosure, providing exceptional optical stability, minimizing optical path lengths, and ensuring accurate and reliable results.
HARPIA-TG is a novel transient grating spectroscopy system designed for direct optical measurement of diffusion coefficients, carrier lifetimes, and diffusion lengths. Fully automated and computer-controlled, the system enables measurements to be completed within minutes, making this complex technique accessible to users at all levels of expertise.
| Main unit 1) | Module 1) | Application 2) |
|---|---|---|
 Ultrafast Transient Absorption Spectrometer | – | Transient absorption and reflection in bulk mode |
 Third Beam Delivery Module | Multi-pulse transient absorption | |
| Femtosecond stimulated Raman scattering (FSRS) | ||
 Time-resolved Fluorescence Module | Kerr gate / Fluorescence upconversion | |
| Picosecond-to-microsecond fluorescence TCSPC | ||
 Flash Photolysis – Nanosecond TA Module | Nanosecond transient absorption measurements | |
 Tabletop Transient Absorption Spectroscopy System | – | Transient absorption and reflection |
 Transient Grating Spectrometer | – | Transient grating spectroscopy |
| Photoluminescence (PL) measurement |
- Contact sales@lightcon.com for typical configurations.
- See ultrafast spectroscopy applications for more information.
Spectral dynamics of β-carotene in solution, acquired using the HARPIA-TA transient absorption spectrometer.
Measurement conditions: 100 kHz repetition rate, 490 nm pump wavelength, < 10 nJ pump pulse energy, 13 s per spectrum (per delay point) acquisition time.
Pump-probe dynamics of a GaAs wafer in the IR, acquired using signal and reference single-channel detectors of the HARPIA-TA transient absorption spectrometer.
Measurement conditions: 75 kHz repetition rate, 700 nm pump wavelength, 1 s per point acquisition time.
Spectral dynamics of DCM laser dye in solution, acquired using the HARPIA-LIGHT transient absorption spectroscopy system.
Measurement conditions: 60 kHz repetition rate, 343 nm pump wavelength, 3 s per spectrum (per delay point) acquisition time.
Nanosecond spectral dynamics of meso-Tetraphenylporphine in solution, acquired using the HARPIA-TA-FP flash photolysis module.
Measurement conditions: 1.8 kHz repetition rate, 343 nm pump wavelength, 5.4 μJ pump pulse energy.
Kerr gate measurements in DCM illustrate the method’s ability to probe fluorescence evolution with sub-picosecond temporal resolution.
Kerr gate measurements in β-carotene generally showcase the resolution of the measurement. The S₂→S₀ fluorescence of carotenoids is ultrafast (<100 fs), therefore, the measured data is mainly IRF-limited.
Fluorescence dynamics of DCM laser dye in solution, acquired using the HARPIA-TF time-resolved fluorescence module in fluorescence upconversion mode.
Measurement conditions: 100 kHz repetition rate, 430 nm pump wavelength.
Fluorescence dynamics of DCM laser dye in solution, acquired using the HARPIA-TF time-resolved fluorescence module in TCSPC mode.
Measurement conditions: 100 kHz repetition rate, 430 nm pump wavelength.
FSRS dynamics of neoxanthin using HARPIA-TA with HARPIA-TB module.
Measurement conditions: 25 kHz repetition rate, 440 nm actinic pump wavelength, 200 nJ pulse energy, 530 nm Raman pump wavelength, 300 nJ pulse energy.
Pump-dump-probe dynamics of DCM laser dye, acquired using the HARPIA-TB third beam delivery module, with the dump pulse resonant to the emission band of DCM.
Measurement conditions: 50 kHz repetition rate, 515 nm pump wavelength, 700 nm dump wavelength, 21 ps dump delay, 90 nJ pump pulse energy, 190 nJ dump pulse energy.
