Comprehensive Spectroscopy System
The HARPIA comprehensive spectroscopy system performs a variety of sophisticated time-resolved spectroscopy measurements in a compact footprint. 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 and fluorescence upconversion (HARPIA-TF), third beam delivery (HARPIA-TB), and microscopy (HARPIA-MM) modules. For a single-supplier solution, the HARPIA spectroscopy system can be 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 modes
- Multi-pulse transient absorption and reflection
- Femtosecond fluorescence upconversion
- Picosecond-to-microsecond fluorescence TCSPC
- Femtosecond stimulated Raman scattering (FSRS)
- 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
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.
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).
Charge photogeneration and recombination in ternary polymer solar cells based on compatible acceptors
R. Hu, W. Zhang, Z. Xiao, J. Zhang, X. Su, G. Wang, J. Chen, X. He, and R. Wang, Journal of Materials Science 25 (56), 14181-14195 (2021).
Effect of Substituents at Imide Positions on the Laser Performance of 1,7-Bay-Substituted Perylenediimide Dyes
R. Muñoz‑Mármol, P. G. Boj, J. M. Villalvilla, J. A. Quintana, N. Zink‑Lorre, N. Sastre‑Santos, J. Aragó, E. Ortí, P. Baronas, D. Litvinas et al., The Journal of Physical Chemistry C (2021).
Energy transfer in (PEA)2FAn-1PbnBr3n+1 quasi-2D perovskites
D. Litvinas, R. Aleksiejūnas, P. Ščajev, P. Baronas, V. Soriūtė, C. Qin, T. Fujihara, T. Matsushima, C. Adachi, and S. Juršėnas, Journal of Materials Chemistry C (2021).
Excited-state properties of Y-series small molecule semiconductors
G. Wen, R. Hu, X. Su, Z. Chen, C. Zhang, J. Peng, X. Zou, X. He, G. Dong, and W. Zhang, Dyes and Pigments 192, 109431 (2021).
Ground- and excited-state characteristics in photovoltaic polymer N2200
G. Wen, X. Zou, R. Hu, J. Peng, Z. Chen, X. He, G. Dong, and W. Zhang, RSC Advances (2021).
High performance tandem organic solar cells via a strongly infrared-absorbing narrow bandgap acceptor
Z. Jia, S. Qin, L. Meng, Q. Ma, I. Angunawela, J. Zhang, X. Li, Y. He, W. Lai, N. Li et al., Nature Communications 1 (12) (2021).
High-Lying 31Ag Dark-State-Mediated Singlet Fission
L. Wang, T. Zhang, L. Fu, S. Xie, Y. Wu, G. Cui, W. Fang, J. Yao, and H. Fu, Journal of the American Chemical Society 15 (143), 5691-5697 (2021).
In-plane oriented CH3NH3PbI3 nanowire suppress the interface electron transfer to PCBM
T. Wang, Z. Yu, H. Huang, W. Kong, W. Dang, and X. Zhao, Chinese Physics B (2021).
Light-Modulated Cationic and Anionic Transport Across Protein Biopolymers
A. Burnstine‑Townley, S. Mondal, Y. Agam, R. Nandi, and N. Amdursky, (2021).