Two examples of problems solvable by statistical optics methods are considered. They are quite clear, they can be interpreted in a transparent manner, and they do not require time-consuming calculations. It is shown how the solution of the first problem — the influence of random variations of the optical thickness of a Fabry-Perot interferometer on its transmission spectra — helps to solve the second promlem: the ’mystery’ of the experimental spectra of polydomain KDP crystals. These examples may be useful in tackling other statistical problems.

PACS: 05.40.+j, 07.60.Ly, 78.66.−w, 77.84.Fa (all) DOI: 10.1070/PU1995v038n06ABEH000093 URL: https://ufn.ru/en/articles/1995/6/e/ A1995RL93800005 Citation: Belinskii A V "Regular and quasiregular spectra of disordered layer structures" Phys. Usp. 38 653–664 (1995) BibTexBibNote ® (generic)BibNote ® (RIS)MedlineRefWorks Оригинал: Белинский А В «Регулярные и квазирегулярные спектры в разупорядоченных слоистых структурах» УФН 165 691–702 (1995); DOI: 10.3367/UFNr.0165.199506e.0691