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Ryabukho V. P., Ljakin D. V., Lychagov V. V. Longitudinal coherence of optical field. Izvestiya VUZ. Applied Nonlinear Dynamics, 2009, vol. 17, iss. 5, pp. 30-42. DOI: 10.18500/0869-6632-2009-17-5-30-42

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Longitudinal coherence of optical field

Ryabukho Vladimir Petrovich, Saratov State University
Ljakin Dmitrij Vladimirovich, Federal State Budgetary Institute of Science Institute of Problems of Precise Mechanics and Control of the Russian Academy of Sciences
Lychagov Vladislav Valerevich, Saratov State University

Spatial coherence of an optical field in a direction of its propagation depending on parameters of frequency and angular spectra of the field is considered. The expressions for function and length of longitudinal coherence are derived depending on width of frequency and angular spectra. The competing influence of angular and frequency spectra of a field on its longitudinal coherence is discussed. The experimental study with use the Michelson interferometer of longitudinal shift confirming theoretical results are executed.

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