LP980 Spectrometer

  • All-in-One spectrometer for Transient Absorption, Laser-Induced Fluorescence, Raman and Laser-Induced Breakdown Spectroscopy (LIBS)
  • Transients can be measured up to 2.55 µm to cover a wide range of samples and sample types
  • Integrated ICCD allows transient spectra to measured within one laser flash
  • Advanced software package for complete computer control of all components and measurements
LP980 Spectrometer

The LP980 sets the standard for technical performance required in a premier research instrument, offering unsurpassed measurement capabilties across a broad range of chemical, physical and biological applications.

Kinetic (K) and Spectral (S) Mode

At the heart of the LP980 is a fully integrated and sophisticated transient absorption spectrometer. It uses the pump-probe technique for measuring transient kinetics and sepctra. In kinetic mode (K) a single point detector is used to measure the transient kinetics at a single wavelength (spectra can be built up by automated scanning over a wavelength range and slicing the data). In spectral mode (S) a gated intensified CCD is used to capture the whole spectrum in the presence and absence of the pump laser pulse, meaning the whole spectrum can be generated after one laser pulse. The LP980 has a dual sample chamber that enables users to reliably and accurately measure transient chemical and biological species up to 2.55 µm using the pump-probe technique AND laser-induced fluorescence lifetimes down to nanosecond time ranges.

Transverse sample excitation geometry comes as standard. Thin-film, diffuse reflection, Raman, fluorescence and phosphorescence lifetime measurement, and LIBS accessories are available as options.

Our tried and tested advanced software, the L900 package, is capable of dual mode measurement removing the need to make any manual mechanical adjustments. The software has an easy-to-use graphical user interface that simplifies a users ability to take measurements easily. Users can comprehensively manipulate data and perform analysis routines.

LP980 Base ConfigurationSpecification
MonochromatorCzerny-Turner with triple grating turret, 300 mm focal length, 25 µm to 10 mm computer-controlled (continuously adjustable) motorised slits
Laser Excitation SourceFlashlamp pumped Q-switched Nd:Yag laser operating at 1064 nm, 532 nm, 355 nm or 266 nm. OPO, tuneable in the range 410 nm - 710 nm (signal). Idler and UV doubler options possible
We can supply a fully integrated laser, please contact us for more information
Sample GeometryTransverse sample excitation geometry included as standard
LP980-K (Kinetic Mode) - for lifetime transient decay measurements at a single wavelengthSpecification
GratingPlane ruled grating, 1800 g/mm, 500 nm blaze as standard
Dispersion1.8 nm/mm
Spectral Range200 nm - 870 nm
Spectral Resolution0.1 nm
SensitivityΔOD 0.002 (single shot - fast detector option, PMT), ΔOD 0.0005 (single shot - slow detector option, ICCD)
Detector TypePhotomulitplier (PMT) with 5 stage dynode chain for high current linearity
Detector Impedance50 Ω (amplified - fast detector, <3 ns rise time), 1 kΩ (slow detector, <100 µs rise time)
LP980-KS (Kinetic & Spectral Mode) - for lifetime transient decay measurements AND spectral measurements of the decay process)Specification
GratingKinetic mode grating plus an additional plane ruled grating: 150 g/mm, 500 nm blaze supplied
Dispersion21.6 nm/mm
Spectral Coverage540 nm (active horizontal ICCD dimension: 25 mm)
Spectral Resolution0.56 nm (spectral coverage / 960 pixels)
SensitivityΔOD 0.0005 single shot
DetectorsKinetic mode PMT plus an additional image intesified CCD camera (ICCD) supplied
Min. Optical Gate Width7 ns (FWHM)
Active Pixels960 x 256
Active Area25 mm x 6.7 mm
Cooling-20°C as standard (-35°C with additional water circulation)
LP980 Upgrade OptionsSpecification
GratingsA variety of gratings with 150 g/mm - 2400 g/mm, optimised from UV through to NIR
Sample HoldersCross-beam geometry, diffuse reflectance, LIBS, Raman (excited-state and ground state) accessory
DetectorsInGaAs detectors (900 nm - 2550 nm) for NIR range are available

The L900 software package controls both the LP980-K, kinetic mode operation, as well as the LP980-KS, kinetic and spectral mode operation. This ensures full compatibility between the two modes as well as a user friendly software environment for systems able to operate in either mode.

The user can view pixel bitmaps of the CCD image to assess the quality of the image at the ICCD photocathode. This is particularly useful for setup and optimisation purposes prior to measurement sequences. For standard measurements 2D images of the raw data and the resulting optical densities are the preferred plot options.

Comprehensive spectral calibration features are available, and automatic software subtraction of camera dark noise is provided. A variety of different spectral measurement and correction options can be made. For example, with the probe shutter permanently closed normal time resolved emission spectra are taken. If a measurement sequence is made with a fixed gain and fixed gate width, but with incremental increase of the gate delay, a map of time resolved spectra is automatically generated. These can be sliced to produce kinetic decays at a given wavelength.

Upgrade to our FLASH software package for advanced transient absorption curve fitting.

  • Optional Information