TAPPIR
Femtosecond Transient Absorption Pump-Probe Infrared Spectrometer
- Single-channel transient absorption detection in
solutions, thin films and solid samples
- Detector type: CdHgTe photoconductive detectors
cooled with liquid N2
- Internal DGF (difference frequency generator)
- External CDP 2017
optical parametric amplifier for DFG pumping
- Internal second harmonic generator for the sample
excitation
- ExciPro 2.5 IR software for data acquisition and
kinetic analysis
A femtosecond difference frequency generator (DFG) is
installed inside the TAPPIR optical unit for the tunable probe of
transient absorption within 3 mm - 11 mm. DFG is pumped with signal and idler waves
delivered together from an external optical parametric amplifier. Two
cooled CdHgTe detectors are used in probe and reference channels,
respectively. Femtosecond pulses from an external Ti: sapphire
amplifier and CDP 2017 are
recommended for the sample excitation.
Specifications
- Spectral response range: 3 mm
-
11 mm with internal DFG (2.5 mm - 17 mm with
external computer controlled DFG)
- Detector operation temperature: 77 K
- Maximum pulse repetition rate: 5 kHz
- Maximum delay between probe and excitation pulses:
2.0 ns (4.0 ns in the optional double-pass configuration)
- Minimum step of the optical delay line: 1.56 fs
|
