Wave optics simulation approach for partial spatially coherent beams

Klipsch School of Electrical and Computer Engineering, New Mexico State University, Las Cruces, NM 88003, USA.
Optics Express (Impact Factor: 3.49). 09/2006; 14(16):6986-92. DOI: 10.1364/OE.14.006986
Source: PubMed


A numerical wave optics approach for simulating a partial spatially coherent beam is presented. The approach involves the application of a sequence of random phase screens to an initial beam field and the summation of the intensity results after propagation. The relationship between the screen parameters and the spatial coherence function for the beam is developed and the approach is verified by comparing results with analytic formulations for a Gaussian Schell-model beam. The approach can be used for modeling applications such as free space optical laser links that utilize partially coherent beams.

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    • "t x and t y are transmittance functions, or " screens " , that embody the random characteristics of the transverse coherence for each component. For propagation simulation, the x-and y-components are handled individually in a manner similar to the partially coherent Gaussian Schell-model beam [7] [8]. In the EGSM case, random screens are generated for each component and applied to the initial deterministic beams, the results are propagated separately over identical paths and the resulting fields are used to form instantaneous Stokes vector results. "
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