St. Petersburg Polytechnic University Journal: Physics and Mathematics Научно-технические ведомости СПбГПУ. Физико-математические науки 2304-9782, 2618-8686, 2405-7223 13 The correlative search method of hidden periodicities in dynamics of laser generation Корреляционный метод поиска скрытых периодичностей в кинетике генерации лазера Ostanin Sergey ostanin1963@mail.ru Semyonov Georgy Altai State University Federal State Budgetary Educational Institution of Higherl Educationс 30 09 2009 3 83 88 94

The search for the periodical fragments has been carried out using statistic characteristics of the signal under study: excesses of subarrays and variances of subarrays of its autocorrelation functions, variances of subarrays power of its spectra. Models testing is applied to differential equations system of Lorentz-Haken.

 open dynamic system intermittency mode excess autocorrelation function determined chaos periodic signal