- Femtosecond-to-microsecond measurements
- Automated switching between fluorescence upconversion and TCSPC
- Automated spectral scanning and calibration
- Optional operation as a stand-alone unit
The HARPIA-TF is a time-resolved fluorescence measurement module that combines fluorescence upconversion and TCSPC techniques. In fluorescence upconversion, the signal from the sample is mixed in a nonlinear crystal with a gating femtosecond pulse to achieve high temporal resolution, which is limited by the duration of the gate and pump pulses. For fluorescence decay times in the nanosecond to microsecond range, the instrument can be used in time-correlated single‑photon counting (TCSPC) mode to measure kinetic traces up to 5 μs. The combination of the two methods enables the measurement of spectrally-resolved fluorescence decay in the femtosecond to microsecond range. Using a high repetition rate PHAROS or CARBIDE laser, the fluorescence dynamics can be measured while exciting the samples with pulse energies down to several nanojoules.
|Mode||Kerr gate||Fluorescence upconversion||TCSPC|
|Spectral range||250 – 1000 nm||330 – 1600 nm||320 – 820 nm 1)|
|Temporal resolution||400 – 500 fs||≤ laser pulse duration or better||< 180 ps 2)|
|Max measurement range||8 ns||∞ 3)|
|Delay resolution||8.3 fs||–|
|Gate beam requirements||15 – 25 μJ||n/a|
|Compatible with||TCSPC||Kerr gate or fluorescence upconversion|
|Extension Module||Physical dimensions (L × W × H)|
|HARPIA-TF||571 × 275 × 183 mm|
Fluorescence Upconversion Measurement Data Samples
Kerr Gate Measurement Data Samples
TCSPC Measurement Data Samples
Dopamine Photochemical Behaviour under UV Irradiation
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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).
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).
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Novel Synthetic Dopamine Analogues: Carbon-13/Nitrogen-15 Isotopic Labeling and Fluorescence Properties
C. Lar, S. Radu, E. Gál, A. Fălămaş, J. Szücs‑Balázs, C. Filip, and A. Petran, Analytical Letters, 1-13 (2022).
Size-dependent spectroscopic insight into the steady-state and time-resolved optical properties of ZnO photocatalysts
A. Falamas, I. Marica, A. Popa, D. Toloman, S. Pruneanu, F. Pogacean, F. Nekvapil, T. D. Silipas, and M. Stefan, Materials Science in Semiconductor Processing 145, 106644 (2022).
Ultrafast Excited-State Proton Transfer of a Cationic Superphotoacid in a Nanoscopic Water Pool
H. Nho, A. Adhikari, and O. Kwon, The Journal of Physical Chemistry B (2022).
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A. Burnstine‑Townley, S. Mondal, Y. Agam, R. Nandi, and N. Amdursky, (2021).
Long-range light-modulated charge transport across the molecular heterostructure doped protein biopolymers
S. Mondal, N. Ghorai, S. Bhunia, H. N. Ghosh, and N. Amdursky, Chemical Science (2021).
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J. Y. Choi, W. Park, B. Park, S. Sul, O. Kwon, and H. Song, , 13303-13311 (2021).
HARPIA-TF Femtosecond Fluorescence Upconversion and TCSPC Module
Rev. 05/01/2022. Size 395 KB.
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