Notch Filter
Hyperion Optics is a premium full-service photonics supplier. Our optical assembly manufacturingcapabilities span across the spectrum. From UV, VIS, to IR, we fabricate custom optical components to system assemblies that meet unique and specialized applications.
The notch filter, in contrast to a narrow band filter, intercepts light in a particular wavelength range by transmitting light at most wavelengths.
Notch filters are useful in applications where it is necessary to filter out the laser light. For example, in drug bioassays, in order to obtain a good signal-to-noise ratio in Raman spectroscopy experiments, it is necessary to suppress the pumping laser, which can be achieved by placing a notch filter on the detection channel. Notch Cut-on filterisalso often used in laser-based fluorescence instruments and in biomedical laser systems.
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