Tunable optical filter Photon etc
400 nm - 2300 nm

For those seeking tunability, we offer our Tunable Top Notch Filter with performances similar to our fixed wavelength Top Notch Filter at any wavelength from 633 nm to 1.6 µm. Optimized for Resonant Raman Spectroscopy using Ti:Saph laser, it can be customized to any specific wavelength range, typically 300 nm wide.

The Tunable Top Notch Filter has a high throughput (up to 80%), with a selectivity similar to that of a triple spectrograph, but at a fraction of the price. Also, our Tunable Top Notch Filter is a compact, easy to align instrument with an intuitive user interface that allows efficient and precise control of the blocked wavelength.

This filter is perfectly matched to our Laser Line Tunable Filter for Raman applications. The Tunable Top Notch Filter's extremely narrow bandwidth rejection has a slightly bigger bandwidth than our Laser Line Tunable Filter to attenuate the excitation light in Resonant Raman Spectroscopy. The same user interface is used to simultaneously control both instruments through a single USB port.

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