Trifonova Y.Stoilova A.Ivanova V.Lilova V.Petkov P.2024-07-162024-07-162024-07-162024-07-162020-01-011314-79781314-7471SCOPUS_ID:85099061416https://rlib.uctm.edu/handle/123456789/1299The present paper reports on the effect of the addition of IIIA metal (Ga or In) to Se-based chalcogenide thin films on the diffraction efficiency. The holographic scalar recording is accomplished using standard interferometric configuration with argon laser with a wavelength of 448 nm, spatial frequency of 2,2.10s m−1 and diameter of the spot 2 mm. The diffraction efficiency relation to the glassy system composition and the time of illumination at constant intensity of a laser beam is investigated. The results are interpreted in terms of the electronic structure in disordered systems.enArticle