Light Conversion-HARPIA-TA 超快瞬态吸收 / 反射光谱仪

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 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 the 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)	250:01:00
A wavelength-tunable source is used instead of a laser-excited white-light continuum. An extended tuning range of ORPHEUS‑HP; see specification for more details. Also applicable to UV/VIS/NIR/SWIR configuration. Up to 24 μm available upon request. 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. Up to 24 μm available upon reques. 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.