Collection: Notch Filter
A notch filter is a type of optical filter that selectively rejects a narrow band of wavelengths while transmitting all others. It can be used to block unwanted light sources, such as laser lines, ambient light, or fluorescence emission, from reaching a detector or a sensor. A notch filter can also be used to isolate specific spectral features, such as absorption lines, emission lines, or Raman peaks, from a complex spectrum.
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