In memory of Nikolai Gennad'evich Basov

Nikolai Gennad'evich Basov, one of the originators of quantum electronics (1964 Nobel Prize in Physics 'for fundamental work in the field of quantum electronics, which has led to the construction of oscillators and amplifiers based on the maser – laser principle', shared with A.M. Prokhorov and Ch.H. Townes), would be 95 years old on 14 December 2017.