Measuring device for complex coherence degree of interference pattern of two optical fields, has device for converting gauss shaped-mode structure of optical field into Gauss-Laguerre-mode structure

摘要

The device has a device (3) for converting a gauss shaped-mode structure of an optical field (1) into a Gauss-Laguerre-mode structure. The device (6) superimposes the optical field with a Gauss-Laguerre-mode structure and the other optical field with a gauss-shaped fashion structure for producing the interference pattern (11). A detection device (13) is provided to detect the interference pattern. An independent claim is also included for a measuring method for a complex coherence measure of an interference pattern of two optical fields.