V.I. Pustovoit Al’manac of Modern Metrology № 4 (16) 2018, pages 15–32 A new method of spectral measurements of incoming optical radiation based on collinear acousto-optic filters which is based on sequential diffraction of incident polarized optical radiation using two sound packets of the same frequency and with the same initial phases is proposed. A theory … Continue reading About measurement of the spectral distribution of optical radiation by acousto-optical spectrometers