An All-in-One Spectrometer for Transient Absorption and Laser-Induced Fluorescence

Edinburgh Instruments presents the LP980 Transient Absorption Spectrometer with the following key features:

  • All-in-one spectrometer for transient absorption and laser-triggered fluorescence
  • In-built ICCD enables transient spectra to be measured within a single laser flash
  • Advanced software platform for full computer control of all parts and measurements
  • Transients can be measured up to 2.55 µm to encompass various samples and sample types

Product Description

The LP980 spectrometer sets the standard for technical efficiency in a leading research instrument. It delivers unmatched measurement capabilities spanning a wide range of physical, chemical, and biological applications.

Kinetic (K) and Spectral (S) Mode

At the center of the LP980 is a completely integrated and advanced transient absorption spectrometer. It applies the pump-probe method for measuring transient kinetics and spectra.

In kinetic mode (K), a single point detector is employed to compute the transient kinetics at a single wavelength (spectra can be developed by automated scanning across a wavelength range and slicing the data).

In spectral mode (S), a gated intensified CCD is employed to record the entire spectrum in the presence and absence of the pump laser pulse, meaning the entire spectrum can be produced after a single laser pulse.

The LP980 spectrometer contains a twin sample chamber that allows users to consistently and accurately measure transient biological and chemical species up to 2.55 µm using the pump-probe method and laser-triggered fluorescence lifetimes up to nanosecond time ranges.

Transverse sample excitation geometry is offered as standard. Thin-film, diffuse reflection, fluorescence, and phosphorescence lifetime measurement fixtures are provided as options.

The company's reputable advanced software, the L900 package, can handle dual mode measurement, eliminating the need to carry out manual mechanical modifications.

The software has a simple graphical user interface that streamlines the user’s ability to capture measurements effortlessly. Users can expansively control data and conduct analysis procedures.

Technical Specifications

Source: Edinburgh Instruments Ltd

LP980 Base Configuration Specification
Monochromator Czerny-Turner with triple grating turret, 325 mm focal length, 25 µm to 10 mm computer-controlled (continuously adjustable) motorized slits
Laser Excitation Source Flashlamp 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 Geometry Transverse sample excitation geometry included as standard
LP980-K (Kinetic Mode) – for lifetime transient decay measurements at a single wavelength Specification
Grating Plane ruled grating, 1800 g/mm, 500 nm blaze as standard
Dispersion 1.8 nm/mm
Spectral Range 200 nm – 870 nm
Spectral Resolution 0.1 nm
Sensitivity ΔOD 0.002 (single shot – fast detector option, PMT), ΔOD 0.0005 (single shot – slow detector option, ICCD)
Detector Type Photomulitplier (PMT) with 5-stage dynode chain for high current linearity
Detector Impedance 50 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
Grating Kinetic mode grating plus an additional plane ruled grating: 150 g/mm, 500 nm blaze supplied
Dispersion 21.6 nm/mm
Spectral Coverage 540 nm (active horizontal ICCD dimension: 25 mm)
Spectral Resolution 0.56 nm (spectral coverage / 960 pixels)
Sensitivity ΔOD 0.0005 single shot
Detectors Kinetic mode PMT plus an additional image intensified CCD camera (ICCD) supplied
Min. Optical Gate Width 7 ns (FWHM)
Active Pixels 960 x 256
Active Area 25 mm x 6.7 mm
Cooling -20 °C as standard (-35 °C with additional water circulation)
LP980 Upgrade Options Specification
Gratings A variety of gratings with 150 g/mm – 2400 g/mm, optimized from UV through to NIR
Sample Holders Cross-beam geometry, diffuse reflectance, thin-film accessory
Detectors InGaAs detectors (900 nm – 2550 nm) for NIR range are available

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