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Lambda VF-1 EDGE Tunable Filter Changer

Sutter Tunable Filter ChangerIntroducing the Lambda VF-1 Edge™ tunable filter system from Sutter Instrument. To take advantage of the new VersaChrome Edge™ filters from Semrock, the Lambda VF-1 Edge system allows user selection of the band-width as well as the center wavelength. This system uses separate tunable high-pass and low -pass filters in series to define the bandpass. An additional filter is used in series with these filters to provide the best blocking outside the pass-band.

How It Works

A specific wavelength within the wide spectral range of each filter is obtained by adjusting the angle of incidence from 0 to 60 degrees. This tuning causes little or no change in spectral performance of the filter regardless of the state of polarization of the light passing through the filter. Filter sets available for the VF-1 Edge cover the wavelengths from <400nm to more than 1100nm. Within this range you can select the half-power point for the high-pass and low-pass filters to any value in steps of 1nm. If the low pass wavelength is set higher than the high pass wavelength the transmission will be blocked, acting as a shutter. In the case of this filter set there are more than 5,000 combinations of filter settings available. This new device incorporates two of our VF-1 filter tilting modules and a Sutter Lambda 10-B controller to give direct control over the bandpass via the unit’s keypad or through external control from a computer or other device. Individual VF-1 modules can also be used with the VersaChrome Edge filters to provide tunable high-pass or short pass filtering.

Special Features

   •  Separate tunable high-pass and low-pass filters let user define the bandpass in nanometer steps
   •  User selectable band-width and center wavelength
   •  Blocking filter ensures best blocking outside bandpass
   •  Based on Semrock VersaChrome Edge technology

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