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  • How to measure optical filter spectra accurately

Monday, January 18, 2010
Optical filters play an important role in enabling applications such as fluorescence microscopy and Raman spectroscopy. In these applications there are two distinct types of beams: the illumination (or excitation) beam and the signal (or emission) beam. Not only are these beams spectrally distinct, but also they differ significantly in their intensity – the signal beam can be a million times (or more) weaker than the illumination beam. Therefore, the ability of filters to selectively transmit desired wavelengths of light while blocking unwanted light is critical.
File: How_to_measure_optical_filter_spectra_accurately.pdf (437.43 KB)
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