Electrically Controlled Spectral Slit for Optical Spectrometers

The resolution of an optical spectrometer is largely determined by a width of the input spectral slit. In some cases, the study of spectra of different nature requires a change in this width to adjust the sensitivity of the instrument. The main solutions currently available are either a mechanically switchable set of slits or a slit with manual width adjustment using a micrometer screw. In this paper, we consider the results of the development of an optical slit, the width of which is controlled electrically by electromagnets, and its value in the process of adjustment is determined by a capacitive method.