We are observing emission from both the Edge and the Bandpass filters on excitation with a Pulsed Laser. The emission is significantly high with multiple/uncontrolled peaks superimposed on the actual photoluminescence data in the whole spectral range of interest. This is becoming particularly difficult in TRPL measurements. Is this issue very common? Please let me know if any specific filters can be used to overcome this issue.
Yes, this is a quite common problem. This is sometimes a problem even in steady state fluorescence experiments. Generally, this prevents measurements close to the exciting beam wavelength.
Sometimes one can use 2 and more different filters, and their order is important. The closer to the detector filters should cut off the light emmited by the other filters.
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