Ultrafast Transient Absorption Spectrometer HARPIA-TA

  • Market-leading sensitivity
  • 350 nm – 24 μm measurement range
  • Probe delay ranges up to 8 ns
  • Pump pulse energies down to nJ
  • Cryostat and peristaltic pump support


  • Market-leading sensitivity
  • 350 nm – 24 μm measurement range
  • Probe delay ranges up 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, ranging 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, and switching between transient absorption and transient reflection measurements. Broadband probe options cover a 350 – 1600 nm range, while a monochromatic probe can be used up to 24 μm. The probe delay stage is configurable from up 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, allowing 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.

Measurement range 350 – 1100 nm 460 – 1100 nm 460 – 1600 nm 350 – 1600 nm 2000 – 13000 nm
Pump range 200 – 1100 nm 330 – 1100 nm
Delay range (resolution) 8 ns (8.3 fs) 4 ns (4.2 fs)
Temporal resolution ≤ laser pulse duration or better
Laser repetition rate 1) 1 – 200 kHz
Maximum data acquisition rate 4000 spectra/s
  1. Higher repetition rates available; contact sales@lighton.com for details.
Extension Flash Photolysis
Measurement range 450 – 2400 nm
Delay range up to 8 ms
Delay resolution 100 ps
Temporal resolution 2 ns
Model Physical dimensions (L × W × H) 1)
HARPIA-TA 730 × 420 × 160 mm
Sample chamber area (L × W) 2)
205 × 215 mm
  1. Without external spectrograph.
  2. External sample placement option is available.

Effect of intramolecular charge transfer processes on amplified spontaneous emission of D–π–A type aggregation-enhanced emission molecules

Y. Li, P. Han, X. Zhang, J. Zhou, X. Qiao, D. Yang, A. Qin, B. Z. Tang, J. Peng, and D. Ma, Journal of Materials Chemistry C 9 (11), 3284-3291 (2023).

Packing-induced selectivity switching in molecular nanoparticle photocatalysts for hydrogen and hydrogen peroxide production

H. Yang, C. Li, T. Liu, T. Fellowes, S. Y. Chong, L. Catalano, M. Bahri, W. Zhang, Y. Xu, L. Liu et al., Nature Nanotechnology 3 (18), 307-315 (2023).

Solution-grown BiI/BiI3 van der Waals heterostructures for sensitive X-ray detection

R. Zhuang, S. Cai, Z. Mei, H. Liang, N. Zhao, H. Mu, W. Yu, Y. Jiang, J. Yuan, S. Lau et al., Nature Communications 1 (14) (2023).

Atomic structure of a seed-sized gold nanoprism

Y. Song, Y. Li, M. Zhou, H. Li, T. Xu, C. Zhou, F. Ke, D. Huo, Y. Wan, J. Jie et al., Nature Communications 1 (13) (2022).

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).

Cobalt(III) Carbene Complex with an Electronic Excited-State Structure Similar to Cyclometalated Iridium(III) Compounds

N. Sinha, B. Pfund, C. Wegeberg, A. Prescimone, and O. S. Wenger, Journal of the American Chemical Society 22 (144), 9859-9873 (2022).

Completely Anisotropic Ultrafast Optical Switching and Direction-Dependent Photocarrier Diffusion in Layered ZrTe 5

S. B. Seo, S. Nah, M. Sajjad, J. Song, N. Singh, S. H. Suk, H. Baik, S. Kim, G. Kim, J. Kim et al., Advanced Optical Materials 3 (11), 2201544 (2022).

Effects of polyethylene oxide particles on the photo-physical properties and stability of FA-rich perovskite solar cells

R. K. Koech, Y. A. Olanrewaju, R. Ichwani, M. Kigozi, D. O. Oyewole, O. V. Oyelade, D. M. Sanni, S. A. Adeniji, E. Colin‑Ulloa, L. V. Titova et al., Scientific Reports 1 (12) (2022).


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Product datasheet.

Rev. 22/05/2024. Size 0.9 MB.

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Product catalog in Chinese.

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