. HARPIA Pump-Probe Spectrometer.

Off-the-Shelf Pump-Probe Spectrometer

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Features

  • Straightforward operation
  • Ample sample space to fit a cryostat or flow system
  • Full control over polarization, intensity, delay and wavelength

Overview

Transient absorption spectrometer HARPIA can be used together with PHAROS / ORPHEUS or Ti:Saph/TOPAS laser systems. It features market‑leading characteristics such as 10-5 resolvable signals along with other unique properties such as the ability to work at high repetition rates (up to 1 MHz) when used with PHAROS/ORPHEUS system. High repetition rate allows measuring transient absorption dynamics while exciting the samples with extremely low pulse energies (thereby avoiding exciton annihilation effects in energy transferring systems or nonlinear carrier recom­bination in semiconductor / nanoparticle samples).

A number of probe configurations and detection options are available starting with simple and cost‑effective photodiodes for single‑wavelength detection and ending with spectrally-resolved broadband detection combined with white‑light continuum probing. Moreover different delay line options can be selected to cover delay windows from 1.7 ns (standard) to 7.5 ns.

HARPIA comes with a PC with preinstalled National Instruments LabView®‑based measurement automation software providing fully controllable, customizable and automatic performance of pump‑probe measurements. Flexibility of NI LabView allows easy customization of software by the user to tailor it to the needs of specific measurements. Preset or custom delay times, number of averages per transient spectrum and other options are available at a click of the mouse.

In addition to experiment automation software, HARPIA includes data analysis package CarpetView for inspecting the acquired data and performing global and target analysis, probe dispersion compensation, exponential fitting etc. The software package features an intuitive and user‑friendly interface; it is delivered with a data analysis tutorial that offers seamless transition from the raw data to publication quality graphs and model‑based parameter estimation. All the software runs under MS Windows and it is easy to use. Even a novice will become an analysis expert in a matter of days!

Pump-Probe Specifications
Parameter Value
Probe wavelength range supported by the optics 240 – 2600 nm
Probe wavelength range
(white light supercontinuum generator pumped by 1030 nm)
480 – 1100 nm
Probe wavelength range
(white light supercontinuum generator pumped by 800 nm)
350 – 980 nm
Probe wavelength range of the detectors 200 nm – 1100 nm, 700 nm – 1800 nm, 1.2 mm – 2.6 mm, 200 – 1100 nm
Spectral range of the spectral devices 180 nm – 24 mm, achievable with interchangeable gratings
Delay range 1.7 ns, 3.8 ns, 7.8 ns
Delay resolution 16.67 fs, 33.3 fs, 6.67 fs
Noise level – single wavelength 1) <10-5 (assuming 2 s averaging per point)
Noise level – multichannel detection 2) <2×10-5 (assuming 5 s averaging per spectrum)
Laser repetition rate 1 – 100 kHz (digitizer frequency <2 kHz)
Time resolution <1.4 x the the pump or probe pulse duration (whichever is longer)
Weight Optical head: ca 100 kg (depends on selected options)
Electronics unit: ca 50 kg.
  1. 1)Test conditions: Pharos laser running at 80 kHz, pump source: Orpheus @480 nm; probe source 1b, spectral device 3d, detector  2a‑a. The value is standard deviation of 100 measurement points taken at the fixed delay. Not applicable for any laser system or any sample.
  2. 2)Test conditions: Pharos laser running at 64 kHz, pump source: Orpheus @480 nm; probe source 1b, spectral device 3d, detector 2b. The value is standard deviation of 100 measurement points taken at the fixed delay, calculated using the signal at ca. 550 nm a wavelength. Not applicable for any laser system or any sample or any spectral range covered by white light supercontinuum generator.
Dimensions
  • Photochemistry
  • Photobiology
  • Photophysics
  • Material science
  • Semiconductor physics
  • Time-resolved spectroscopy

Products List

. HARPIA Pump-Probe Spectrometer.