Band-pass optical filter LLTF CONTRAST™

tunablebroadbandlaser

Laser Line Tunable Filter The Laser Line Tunable Filter (LLTF CONTRAST) is a non-dispersive tunable bandpass filter based on volume Bragg gratings. It combines very high optical density (> OD6), an outstanding out-of-band rejection, and wide tunability. The LLTF can be customized to cover the entire 400 nm to 2500 nm spectral range with a high spectral resolution. It can be coupled with a wide variety of broadband sources to create a tunable laser source. It can also be used as a cleanup filter for spectroscopy applications. There are numerous possible LLTF configurations whose spectral range and bandwidth can be finely tuned to fit specific needs. The specifications below of several tried-and-tested standard models may serve as a starting point.