The HARPIA comprehensive spectroscopy system performs a variety of sophisticated time-resolved spectroscopy measurements in a compact footprint. Extension 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.

HARPIA Application Table

Application ¹⁾	Main unit ^{2) 3)}	Additional module ^{2) 3)}
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)
Fluorescence upconversion
Picosecond-to-microsecond fluorescence TCSPC
Z-scan		⁴⁾
Flash photolysis		Extension⁵⁾

Read more in ultrafast spectroscopy applications.
See HARPIA selection guide for more details.
Contact sales@lightcon.com for exemplary configurations.
HARPIA-TB also supports Z-scan as a free-standing device.
Optional flash photolysis extension for HARPIA-TA; see specifications.

Products Data Samples Downloads

Comprehensive Spectroscopy System

Femtosecond transient absorption and reflection in bulk and microscopy modes
Multi-pulse transient absorption and reflection
Fluorescence upconversion and TCSPC
Femtosecond stimulated Raman spectroscopy (FSRS)
Flash photolysis, Z-scan

Ultrafast Transient Absorption Spectrometer

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

Femtosecond Fluorescence Upconversion and TCSPC Module

Picosecond-to-microsecond fluorescence TCSPC
Automated switching between fluorescence upconversion and TCSPC measurements
Automated spectral scanning and calibration
Optional operation as a stand-alone unit

Third Beam Delivery Module

Delivery of an additional femtosecond or picosecond beam
Polarization, intensity, and delay control
Femtosecond stimulated Raman scattering (FSRS) support
Z-scan support

Microscopy Module

Down to 5 μm spatial resolution
Broadband and monochromatic probe options
Motorized XYZ sample stage
Transmission, specular and diffuse reflection geometry

HARPIA measurement examples

Spectral dynamics of beta-carotene in solution acquired using HARPIA-TA. Measurement conditions: 100 kHz repetition rate, 490 nm pump wavelength, < 10 nJ pump pulse energy, 13 s/spectrum acquisition time.

Fluorescence dynamics of DCM laser dye in solution acquired using HARPIA-TF in fluorescence upconversion mode. Measurement conditions: 100 kHz repetition rate, 430 nm pump wavelength.

Single perovskite crystallite pump-probe spectral kinetics, pump at 400 nm. Pump-probe spot marked by the small circle

Single perovskite crystallite pump-probe kinetics. Pump-probe spot marked by the small circle. Measurement conditions: 400 nm pump wavelength, 200 kHz repetition rate, 2 nJ pump pulse energy, 0.5 s/spectrum acquisition time, and Plan Fluor 4x/0.13 objective.

Pump-probe dynamics of GaAs wafer in IR measured using signal and reference single-channel detectors. Measurement conditions: 75 kHz repetition rate, 700 nm pump wavelength, 1 s/point acquisition time.

Pump-dump-probe dynamics of DCM laser dye with dump pulse resonant to the emission band of DCM. Measurement conditions: 50 kHz repetition rate, 515 nm pump wavelength, 700 nm dump wavelength, 21 ps dump delay, 90 nJ pump pulse energy, 190 nJ dump pulse energy.

Nanosecond spectral dynamics of meso‑Tetraphenylporphine in solution acquired using HARPIA in flash photolysis mode. Measurement conditions: 1.8 kHz repetition rate, 343 nm pump wavelength, 5.4 μJ pump energy.

HARPIA performance at high repetition rate

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 SNR of difference absorption spectra obtained with a Ti:Sapphire laser running at 1 kHz and a PHAROS laser running at 64 kHz with the same acquisition time.