Analysis and simulation of a fiber bundle method for creating a partially spatially coherent beam

Xifeng Xiao; Jagan Aluguri; David Voelz

doi:10.1117/12.812054

24 February 2009 Analysis and simulation of a fiber bundle method for creating a partially spatially coherent beam

Xifeng Xiao, Jagan Aluguri, David Voelz

Proceedings Volume 7200, Atmospheric Propagation of Electromagnetic Waves III; 72000D (2009) https://doi.org/10.1117/12.812054
Event: SPIE LASE: Lasers and Applications in Science and Engineering, 2009, San Jose, California, United States

Abstract

A fiber bundle arrangement has been proposed in the literature to produce a partially spatially coherent beam. The bundle contains fibers of random lengths and the source has limited temporal coherence. The analytical expression for the autocorrelation function of the bundle pupil is derived, which defines the behavior of the beam as it propagates. Simulation results are used to verify the analytic theory. The far-field irradiance pattern for the bundle arrangement is addressed analytically and through wave optics simulation. Averaging the irradiance pattern for a number of simulation realizations was shown to converge to the analytic result. The process of averaging over a small band of source wavelengths is developed and is shown to result in a spatially partially coherent beam. Simulation results again compared favorably with the analytic theory.

Citation Download Citation

Xifeng Xiao, Jagan Aluguri, and David Voelz "Analysis and simulation of a fiber bundle method for creating a partially spatially coherent beam", Proc. SPIE 7200, Atmospheric Propagation of Electromagnetic Waves III, 72000D (24 February 2009); https://doi.org/10.1117/12.812054

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