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Phase space of partially coherent light with discontinuous surfaces

: Zhong, M.; Gross, H.

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Journal of the European Optical Society 12 (2016), Nr.1, 8 S.
ISSN: 1990-2573
Zeitschriftenaufsatz, Elektronische Publikation
Fraunhofer IOF ()

We propagate partially coherent light through discontinuous surfaces and analyze the optical effects in phase space. The discontinuous surfaces are classified into two types, those with discontinuity in space and those with discontinuity in slope. Results are discussed based on the Wigner function. This approach explains the performance of segmented elements during the transition from the refractive into the diffractive regime. At first the diffraction effects generated by a single discontinuity (e.g. a phase step and a linear axicon) are investigated. Later on we discuss surfaces with periodic discontinuities, e.g. gratings, to study the formation of multiple diffracted orders. A kinoform lens is given as a further example to visualize the change from pure refraction to diffraction. Moreover, we present the beam homogenizing effect in phase space generated by lens arrays.