Turn-key femtosecond pump-probe spectroscopy solution featuring high flexibility.

. Transient Absorption Spectrometer HARPIA-TA.

Ultrafast Transient Absorption Spectrometer

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Features

  • 350 – 1100 nm probe wavelength range
  • Ample sample space to fit a cryostat or flow system
  • Beam monitoring and self‑recalibration
  • Simple integration of any user‑preferred external spectrograph

Overview

HARPIA-TA pump-probe measurement. Spectral dynamics of beta-carotene in solution
HARPIA-TA optical layout

The transient absorption spectrometer HARPIA offers a sleek and compact design together with intuitive user experience and easy day-to-day maintenance meeting the needs of today's scientific world. Adhering to the standards raised by the OPRHEUS line of devices, the entire spectroscopic system is contained in a single monolithic aluminum casing that inherently ensures excellent optical stability and minimal optical path for the interacting beams. HARPIA can be easily integrated with both PHAROS / ORPHEUS and Ti:Sa / TOPAS laser systems. HARPIA 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 up to several nanojoules.

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 supercontinuum probing. Data acquisition and measurement control are now integrated within the device itself and offer such improved detection capabilities as:

  • Single (sample-only) or multiple (sample and reference) integrated spectral detectors
  • Simple integration of any user-preferred external spectrograph
  • Beam monitoring and self-recalibration capabilities (both along the optical path of the pump/probe beams and at the sample plane) and an option for automated beam readjustment
  • Point detectors (photodiodes)
  • Straightforward switching between transient absorption or transient reflection measurements
  • Capability to combine both transient absorption and Z-scan experiments on the same device.

Moreover, different delay line options can be selected to cover delay windows from 2 ns to 8 ns and HARPIA may house either standard linear leadscrew (20 mm/s) or fast ball-screw (300 mm/s) optical delay stages.

A number of optomechanical peripherals are compactly enclosed in the HARPIA casing, including:

  • An optical chopper that can either phase-lock itself to any multiple of the frequency of the laser system or operate in a free-running internally-referenced regime
  • Motorized and calibrated Berek’s polarization compensator that can automatically adjust the polarization of the pump beam (optional)
  • Motorized transversely translatable supercontinuum generator (applicable for safe and stable supercontinuum generation in materials such as CaF2 or MgF2; optional)
  • Automated sample moving unit that translates the sample in the focal plane of the pump and probe beams, thus avoiding local sample overexposure (optional)
  • Integrated PC (optional)
  • Sample stirrer.

Moreover, the new HARPIA is designed to be compatible with any user-favored cryostat and/or peristaltic pump system (see mounting sheme). Capabilities of the new HARPIA can be further extended by introducing a third beam to the sample plane, thus allowing the user to perform multi-pulse transient absorption measurements. For simple systems – all-in-one package (no external electronics rack).

HARPIA-TA pump-probe measurement. Spectral dynamics of beta-carotene in solution
HARPIA-TA optical layout
Download HARPIA datasheet
HARPIA Femtosecond Extended Spectroscopic Systems
Product datasheets. Version 07/01/2019, 4.33 MB.
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 350 – 750 nm, 480 – 1100 nm
Probe wavelength range, white light supercontinuum generator, pumped by 800 nm 350 – 1100 nm
Probe wavelength range of the detectors 200 – 1100 nm, 700 – 1800 nm, 1.2 – 2.6 μm
Spectral range of the spectral devices 180 nm – 24 μm, achievable with interchangeable gratings
Delay range 4 ns, 6 ns, 8 ns
Delay resolution 4.17 fs, 6.25 fs, 8.33 fs
Laser repetition rate 1 – 1000 kHz (digitizer frequency <2 kHz)
Time resolution <1.4 x the the pump or probe pulse duration (whichever is longer)
Dimensions
  • Photochemistry
  • Photobiology
  • Photophysics
  • Material science
  • Semiconductor physics
  • Time-resolved spectroscopy
HARPIA-TA Ultrafast Transient Absorption Spectrometer. Product datasheets. Version 19/12/2018, 0.38 MB.
HARPIA Femtosecond Extended Spectroscopic Systems. Product datasheets. Version 07/01/2019, 4.33 MB.
Ultrafast Lasers, 2019. Products catalogue. Version 16/04/2019, 10.55 MB.
超快激光 2019. Products catalogue in Chinese. Version 16/04/2019, 11.3 MB.

Products List

Turn-key femtosecond pump-probe spectroscopy solution featuring high flexibility.

. Transient Absorption Spectrometer HARPIA-TA.