PACS:42.55.Lt, 42.60.Jf, 42.25.Hz, 42.25.Gy (all) DOI:10.1070/PU1972v014n05ABEH004675 URL: https://ufn.ru/en/articles/1972/5/j/ Citation: Shustin O A, Velichkina T S, Mikheeva L F, Yakovlev I A "Some demonstrations in wave optics performed with a Gas laser" Sov. Phys. Usp.14 666–667 (1972)