Ultrafast Transient Absorption Spectrometer HARPIA-TA

  • Market-leading sensitivity
  • 330 nm – 24 μm spectral range
  • Probe delay ranges from 2 ns to 8 ns
  • Pump pulse energies down to nJ
  • Cryostat and peristaltic pump support

Features

  • Market-leading sensitivity
  • 330 nm – 24 μm spectral range
  • Probe delay ranges from 2 ns to 8 ns
  • Pump pulse energies down to nJ
  • Cryostat and peristaltic pump support

The HARPIA-TA ultrafast transient absorption spectrometer provides pump-probe measurement functionality in a HARPIA system. Several probe light configurations and detection options are available: from a photodiode for single-wavelength detection to white-light supercontinuum probing combined with spectrally-resolved broadband detection. HARPIA-TA features extensive automation options providing pump and probe beam position tracking and alignment, pump polarization control, supercontinuum generator switching, sample positioning, as well as switching between transient absorption and transient reflection measurements. Broadband probe options cover a 330 – 16000 nm range, while a monochromatic probe can be used up to 24 μm. The probe delay stage is configurable from 2 ns to 8 ns.

HARPIA-TA features market-leading sensitivity of 0.05 mOD (10-4 ΔT/T) and can be operated at high repetition rates of up to 1 MHz when used with a PHAROS or CARBIDE laser and an ORPHEUS series OPA, which allows the study of transient absorption dynamics with excitation pulse energies down to several nanojoules.

HARPIA-TA is compatible with cryostats and peristaltic pumps, and the capabilities of the spectrometer are extendable using expansion modules.

Model HARPIA-TA
Configuration UV / VIS / NIR / SWIR MIR
Probe excitation wavelength 1030 nm 515 nm 800 nm n/a 1)
Probe spectral range 460 – 1600 nm 350 – 750 nm 330 – 1400 nm 190 nm – 16000 nm 2)
Detection spectral range 200 – 1100 nm, 900 – 1700 nm, or 900 – 2600 nm 2 – 13 μm 3)
Delay range 2 ns, 4 ns, or 8 ns
Delay resolution 2.1 fs, 4.2 fs, or 8.3 fs
Laser repetition rate 1 – 1000 kHz
Temporal resolution < 1.4× pump or probe pulse duration, whichever is longer
Maximum data acquisition rate 4000 spectra/s
SNR 4) 250 : 1
  1. A wavelength-tunable source is used instead of a laser-excited white-light continuum.
  2. An extended tuning range of ORPHEUS‑HP; see specification for more details. Also applicable to UV/VIS/NIR/SWIR configuration.
  3. Up to 24 μm available upon request; contact sales@lighton.com for more details.
  4. Estimated as the standard deviation of a set of 2500 spectra measured in SCHOTT OG530 glass with 54 nJ, 370 nm pump and > 4.5 mOD at a maximum of the spectrum. Not applicable to all samples and configurations.
Model HARPIA-TA
Delay resolution 100 ps
Temporal resolution 2 ns
SNR 1) 40 : 1
  1. Estimated as the standard deviation of a set of 2000 spectra measured in SCHOTT OG530 glass with 515 nm pump and > 10 mOD at a maximum of the spectrum. Not applicable to all samples and configurations.
Model HARPIA-TA
Physical dimensions (L × W × H) 1) 730 × 420 × 160 mm
Sample chamber area (L × W) 205 × 215 mm
  1. Without external spectrograph.

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).

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).

NIR-to-vis photon upconversion in rubrenes with increasing structural complexity

E. Radiunas, M. Dapkevičius, L. Naimovičius, P. Baronas, S. Raišys, S. Juršėnas, A. Jozeliūnaitė, T. Javorskis, U. Šinkevičiūtė, E. Orentas et al., Journal of Materials Chemistry C 12 (9), 4359-4366 (2021).

Transient absorption with a femtosecond tunable excitation pump reveals the emission kinetics of color centers in amorphous silica

V. D. Michele, A. Sciortino, F. Messina, M. Cannas, A. Boukenter, E. Marin, S. Girard, and Y. Ouerdane, Optics Letters 7 (46), 1736 (2021).

A stable covalent organic framework for photocatalytic carbon dioxide reduction

Z. Fu, X. Wang, A. M. Gardner, X. Wang, S. Y. Chong, G. Neri, A. J. Cowan, L. Liu, X. Li, A. Vogel et al., Chemical Science 2 (11), 543-550 (2020).

An Insight into the Excitation States of Small Molecular Semiconductor Y6

X. Zou, G. Wen, R. Hu, G. Dong, C. Zhang, W. Zhang, H. Huang, and W. Dang, Molecules 18 (25), 4118 (2020).

Anthracene derivatives as broadband nonlinear optical materials: nonlinear absorption and excited-state dynamics analysis

W. Zhou, Y. Fang, X. Wu, Y. Han, J. Yang, L. Shen, and Y. Song, RSC Advances 34 (10), 19974-19981 (2020).

D–π–A-Type Pyrene Derivatives with Different Push–Pull Properties: Broadband Absorption Response and Transient Dynamic Analysis

R. Niu, Y. Wang, X. Wu, S. Chen, X. Zhang, and Y. Song, The Journal of Physical Chemistry C 9 (124), 5345-5352 (2020).

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