FOG100
Femtosecond Fluorescence Up-Conversion Spectrometer
- Turnkey fluorescence up-conversion femtosecond spectroscopy system
- Fluorescence kinetics in solutions, solid samples and thin films
- < 100 fs temporal resolution
- > 105 detection dynamic range
- Computer controlled double monochromator
- Fluorescence anisotropy measurements
Model FOG 100-DX: operation with femtosecond Ti: sapphire lasers
Model FOG 100-DA: operation with femtosecond amplifier systems
Femtosecond optical gating (FOG) methods gives best temporal resolution in fluorescence
spectroscopy. The resolution is determined by a pulse width of femtosecond excitation
and gate pulses and doesn't depend on a detector response function. The fluorescence kinetics
from femtosecond to nanosecond time range is obtained by a scanning of the gate pulse
relative to the fluorescence excitation pulse.
The sum frequency generation (also called up-conversion) in optical nonlinear crystal is used
as a gating method in the FOG systems manufactured by the CDP Systems Corp. since 1997.
We offer up-conversion systems to match with different types of femtosecond pulse sources
and to get best spectral and dynamic ranges, sensitivity and temporal resolution.
Specifications:
- Fluorescence spectral range: 320 nm – 1600 nm (depends on the excitation wavelength)
- Pulse repetition rate: 1 kHz - 10 kHz (Model DA), 100 kHz - 100 MHz (Model DX)
- Maximum delay between gate and excitation pulses: 2.0 ns (4.0 ns in the optional
double-pass configuration)
- Minimum step of the gate pulse: 1.56 fs
An optional CDP 2015 third harmonic generator is recommended with FOG 100-DX for the
UV sample excitation. The second harmonic generator is installed inside the
FOG 100-DX optical unit
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