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Home > Products > Filters > Notch Filters
OD4.0 Notch Filters
A notch filter is an optical element that selectively blocks specific narrowband wavelengths while allowing other wavelengths to pass. The core principle is to utilize optical interference, diffraction or absorption effects to create a high reflection or absorption at the target wavelength, thus achieving a strong suppression of that wavelength.
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What are the different types of notch filters by spectral characteristics?
Narrowband Notch Filters: bandwidth<10nm (e.g. laser wavelength filtering).
Broadband Notch Filters: bandwidth>50nm (e.g. solar background suppression).
Multi-channel Notch Filters: simultaneous suppression of multiple discrete wavelengths (e.g., multiple laser line applications).
Narrowband Notch Filters: bandwidth<10nm (e.g. laser wavelength filtering).
Broadband Notch Filters: bandwidth>50nm (e.g. solar background suppression).
Multi-channel Notch Filters: simultaneous suppression of multiple discrete wavelengths (e.g., multiple laser line applications).
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