From Event: SPIE Optical Engineering + Applications, 2016
Polychromatic laser light can reduce speckle contrast in wavefront-sensing and imaging applications that use direct detection schemes. To help quantify the associated reduction in speckle contrast, this study investigates the accuracy and numerical efficiency of three separate wave-optics models that simulate the active illumination of extended objects with polychromatic laser light. The three separate models use spectral slicing, Monte Carlo averaging, and depth slicing, respectively, to simulate the laser-target interaction. The sampling requirements of all three models are discussed. Comparisons to analytical solutions and experimental data are made when possible. In general, the experiments and theory compare favorably with the models.
Noah R. Van Zandt, Mark F. Spencer, Michael J. Steinbock, Brian M. Anderson, Milo W. Hyde, and Steven T. Fiorino, "Comparison of polychromatic wave-optics models," Proc. SPIE 9982, Unconventional Imaging and Wavefront Sensing XII, 998209 (Presented at SPIE Optical Engineering + Applications: August 31, 2016; Published: 20 September 2016); https://doi.org/10.1117/12.2237314.
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