IMPROVED ACCURACY INTERFEROMETER WITH ACTIVE DAMPING OF PARASITIC VIBRATIONS

摘要

This invention relates to the field of spectroscopy, and more particularly to interferometers and Fourier transform spectrometers. The essence of the invention is the use of an electrodynamic head, in which the resonant frequency f_r giving rise to parasitic vibrations is effectively damped with the aid of an active feedback system by virtue of the fact that said resonant frequency is sufficiently remote on the frequency axis relative to the vibration frequency of a mirror f. The proposed interferometer with a vibrating mirror that generates parasitic vibrations solves the problem of improving spectrum measurement accuracy.