Resource Library

Notch Filters

Notch filters are ideal for applications that require nearly complete rejection of a laser line while passing as much non-laser light as possible. The main drawback of standard thin-film notch filters has been a limited passband range due to the fundamental and higher-harmonic spectral stop bands. Learn More

RazorEdge and MaxLine are a Perfect Match

The Semrock MaxLine and RazorEdge U-grade optical filters make an ideal filter pair for applications like Raman spectroscopy – they fit together like hand-in-glove. Learn More

Measurement of Optical Filter Spectra

Due to limitations of standard metrology techniques, the measured spectral characteristics of thin-film interference filters are frequently not determined accurately, especially when there are steep and deep edges. Learn more about IDEX Health & Science | Semrock's solution to measure optical filter spectra. Learn More