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L900 features 4-exponential fitting of transient absorption decays, including reconvolution algorithms, as standard.
Laser-induced fluorescence (LIF) decays are easily acquired with the standard PMT detector. L900 features allows acquiring a map by varying the wavelength automatically, and slicing the data to obtain time-resolved emission spectra.
If the LP980 is equipped with an ICCD (LP980-KS), time-resolved spectra can be obtained in a single laser shot. L900 allows mapping the acquisition delay and displaying the result in 2D or 3D.
Setting a time map of the LIF spectrum is easy in L900. The user can set parameters such as the interval between acquisitions, the length of each acquisition, and the gain of the ICCD detector.
| Measurement Modes | Control Features | Data Manipulation and Display |
|---|---|---|
| Measurement setup | Wavelength / slit control | ΔOD calculation (automatic and manual) |
| Single kinetic measurement: - Transient absorption - Laser-induced emission | Grating selection | Arithmetic (+, -, x, /, append) |
| Multiple kinetic measurements: - Transient absorption - Laser-induced emission | Pump laser flashlamp trigger | Scaling |
| Time-Resolved Absorption Spectra (TRAS) | Pump laser Q-switch trigger | Normalise |
| Time-Resolved Emission Spectra (TRES) | Probe source pulse current | Baseline subtraction |
| Stop-flow mode for use with optional stopped flow accessory | Pump and probe shutters | Smooth |
| Oscilloscope trigger (K mode) | Data slicing - TRAS | |
| Oscilloscope time base (K mode) | Data slicing - TRES | |
| Oscilloscope voltage scale (K mode) | Full data reconvolution using non-linear least square fitting routine | |
| Signal offset (K mode) | 2D, 3D, Contour plotting and text | |
| Time shift / delay (K mode) | ||
| ICCD gain (KS mode) | ||
| ICCD gate delay and gate width (KS mode) | ||
| ICCD temperature (KS mode) | ||
| Optional temperature controlled sample holder | ||
| Optional cryostat mounting | ||
| Stop-flow synchronisation |