Tribute to the memory of professor Vitaly Voloshinov

On September 28, 2019, the acousto-optics community was deeply saddened with the passing of Vitaly Borisovich Voloshinov, Professor of the Lomonosov Moscow State University, who significantly contributed to many Schools on Acousto-Optics and Applications. In this article, we would like to pay tribute to the memory of Prof. Voloshinov by presenting his remarkable contribution in research, teaching, engineering and organization.