Fourier processing of the speckle structure of the optical field formed in the process of multiphonon Bragg diffraction

Котов В.М., Шкердин Г.Н., Шкердин Д.Г., Воронко А.И., Тихомиров С.А., Стиенс Й., Вункс Р., Вандермейрен В. Фурье-обработка спекл-структуры оптического поля, формируемого в процессе многофононной брэгговской дифракции // Оптический журнал. 2007. Т. 74. № 2. С. 12–15.

Kotov V.M., Shkerdin G.N., Shkerdin D.G., Voronko A.I., Tikhomirov S.A., Stiens J., Vounckx R., Vandermeiren W. Fourier processing of the speckle structure of the optical field formed in the process of multiphonon Bragg diffraction [in Russian] // Opticheskii Zhurnal. 2007. V. 74. № 2. P. 12–15.

V. M. Kotov, G. N. Shkerdin, D. G. Shkerdin, A. I. Voronko, S. A. Tikhomirov, J. Stiens, R. Vounckx, and W. Vandermeiren, "Fourier processing of the speckle structure of the optical field formed in the process of multiphonon Bragg diffraction," Journal of Optical Technology. 74 (2), 84-86 (2007). https://doi.org/10.1364/JOT.74.000084

The quantitative characteristics of the speckle structure of an optical field are obtained by Fourier processing the optical signal, using a transparency that differentiates the speckle pattern. It is shown in terms of the Gauss-Schell model that the maximum values of the differential of the processed pattern are proportional to the degree of spatial coherence of the corresponding section of the optical field. The results are found to be in good agreement with the data obtained when other methods are used (in particular, a method based on the angular selectivity of multiphonon acoustooptic Bragg scattering).