LIF photometric instrument specification

The detection performance of an LIF photometric device is governed by the emission filter(s), excitation filter(s), detector type, the excitation source and the detection scheme. The selection of optical elements and device configuration as it relates to the detection performance is further described by expanding the collection efficiency term in Equation 11.3  

The response function and the associated analytical merits for absorption spectroscopic techniques (e.g., NIR, UV-vis and infrared) are determined by the optical path length, detector gain, signal averaging and spectral resolution. The LIF detection performance is also governed by these parameters but is also influenced by critical parameters associated with the excitation source (e.g., optical power, pulse rate, etc.) as previously discussed.  

There are numerous excitation sources available for LIF instruments. A xenon arc lamp is the most common light source within commercial LIF analyzers. While they offer uniform broad spectral coverage across the UV-vis range and sufficient uniform power output, they are low precision sources and do not offer sufficient real-time or dynamic optical power control. The white output also necessitates an excitation 

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