Fluorolog-3 v.2.2 (10 Sep 2002)
Introduction to Lifetime Measurements
8-1
8: Introduction to Lifetime
Measurements
Introduction
Although the Fluorolog
®
-3 spectroscopy system is fully capable of performing lifetime
measurements, it was designed to excel in the area of fluorescence measurements. Op-
erating within a lifetime range of 10 ps to 10 µs and a frequency range of 0.2 to 310
MHz, the Fluorolog
®
-Tau-3 specifically addresses the needs of phosphorescence meas-
urements.
To design and build the Fluorolog
®
-Tau-3, Jobin Yvon Inc. started with the proven per-
formance of a Fluorolog
®
-3, the most sensitive, steady-state spectrofluorometer in the
world, and added unique optical and electronic components for frequency-domain
measurements. From picoseconds to microseconds, the Fluorolog
®
-Tau-3 performs re-
liably and delivers reproducible results time after time.
The proven sensitivity and resolving power of the Fluorolog
®
-3 and the high-quality
Jobin-Yvon-Inc. optics provide the precise collimation to take maximum advantage of
the system’s CW source, thereby ensuring accurate results. In addition, software is
equipped with a user-friendly interface, intuitive commands, a powerful post-
acquisition module, and comprehensive on-line help.
DataMax, the software included with the Fluorolog
®
-Tau-3, allows you to acquire
steady-state as well as lifetime measurements. DataMax controls the spectrometers,
programmable excitation shutter, automated four-position sample changer, slits, and
high voltage to the signal and reference detectors. The software acquires, processes,
and manages data.
The lifetime application is integrated seamlessly into the steady-state software. Re-
searchers who upgrade a Fluorolog
®
-3 to a Fluorolog
®
-Tau-3 will find the DataMax
lifetime software easy to use. Researchers using a Fluorolog
®
-Tau-3 instrument for the
first time will likewise find it easy to use.
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