Comprehensive Spectroscopy Systems
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.
The HARPIA-TA is a transient absorption spectroscopy system. Extension modules and customization options tailor the HARPIA system to specific measurement needs. In particular, it can be expanded using time-correlated single-photon counting 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.
The HARPIA-TG is a novel transient grating spectroscopy system dedicated to the measurement of the diffusion coefficient and carrier lifetime. The fully automated and computer-controlled system enables the measurement in a matter of minutes.
| Main unit 1) | Module 1) | Application 2) |
|---|---|---|
 |
– | Transient absorption and reflection in bulk mode |
 |
Transient absorption and reflection in microscopy mode | |
 |
Multi-pulse transient absorption and reflection | |
| Femtosecond stimulated Raman scattering (FSRS) | ||
| Z-scan | ||
 |
Kerr gate / Fluorescence upconversion | |
| Picosecond-to-microsecond fluorescence TCSPC | ||
 |
– | Transient grating spectroscopy |
| Single-wavelength transient absorption |
- See HARPIA selection guide for more details or contact sales@lightcon.com for typical configurations.
- See ultrafast spectroscopy applications for more information.
- Transient absorption and reflection in bulk and microscopy
- Multi-pulse transient absorption and reflection
- Femtosecond fluorescence upconversion
- Femtosecond stimulated Raman scattering (FSRS)
- Picosecond-to-microsecond fluorescence TCSPC
- Intensity-dependent transient absorption and reflection
- Flash photolysis, Z-scan
- Market-leading sensitivity
- 330 nm – 24 μm spectral range
- Probe delay ranges from 2 to 8 ns
- Pump pulse energies down to nJ
- Cryostat and peristaltic pump support
- Femtosecond-to-microsecond measurements
- Automated switching between fluorescence upconversion and TCSPC
- Automated spectral scanning and calibration
- Optional operation as a stand-alone unit
- Delivery of an additional femtosecond or picosecond beam
- Polarization, intensity, and delay control
- Femtosecond stimulated Raman scattering (FSRS) support
- Z-scan support
- Down to 2 μm spatial resolution
- Broadband and monochromatic probe options
- Motorized XYZ sample stage
- Transmission, specular and diffuse reflection geometry
- Carrier diffusion coefficient in a matter of minutes!
- Non-invasive measurement technique
- Fully automated and computer controlled
- Continuous setting of grating period
- Sensitivity down to µJ/cm² excitation level
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.
Atomic structure of a seed-sized gold nanoprism
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Charge Photogeneration and Recombination in Fluorine-Substituted Polymer Solar Cells
R. Hu, Y. Liu, J. Peng, J. Jiang, M. Qing, X. He, M. Huo, and W. Zhang, Frontiers in Chemistry 10 (2022).
Dopamine Photochemical Behaviour under UV Irradiation
A. Falamaş, A. Petran, A. Hada, and A. Bende, International Journal of Molecular Sciences 10 (23), 5483 (2022).
Electron–Hole Binding Governs Carrier Transport in Halide Perovskite Nanocrystal Thin Films
M. F. Lichtenegger, J. Drewniok, A. Bornschlegl, C. Lampe, A. Singldinger, N. A. Henke, and A. S. Urban, ACS Nano (2022).
Enhanced transfer efficiency of plasmonic hot-electron across Au/GaN interface by the piezo-phototronic effect
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Evidence and Governing Factors of the Radical-Ion Photoredox Catalysis
D. Y. Jeong, D. S. Lee, H. L. Lee, S. Nah, J. Y. Lee, E. J. Cho, and Y. You, ACS Catalysis, 6047-6059 (2022).
Exciton-Like and Mid-Gap Absorption Dynamics of PtS in Resonant and Transparent Regions
J. Huang, N. Dong, N. McEvoy, L. Wang, H. Wang, and J. Wang, Laser &$\mathsemicolon$ Photonics Reviews, 2100654 (2022).
Highly Efficient Quasi-2D Green Perovskite Light-Emitting Diodes with Bifunctional Amino Acid
C. Liu, Y. Liu, S. Wang, J. Liang, C. Wang, F. Yao, W. Ke, Q. Lin, T. Wang, C. Tao et al., Advanced Optical Materials, 2200276 (2022).
Insight into perovskite light-emitting diodes based on PVP buffer layer
N. Jiang, Z. Wang, J. Hu, M. Liu, W. Niu, R. Zhang, F. Huang, and D. Chen, 241, 118515 (2022).
Intrachain photophysics of a donor–acceptor copolymer
H. Nho, W. Park, B. Lee, S. Kim, C. Yang, and O. Kwon, Physical Chemistry Chemical Physics 4 (24), 1982-1992 (2022).