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Quantitative characterization of the x-ray imaging capability of rotating modulation collimators with laser light
1996
Applied Optics
We developed a method for making quantitative characterizations of bi-grid rotating modulation collimators ͑RMC's͒ that are used in a Fourier transform x-ray imager. With appropriate choices of the collimator spacings, this technique can be implemented with a beam-expanded He-Ne laser to simulate the plane wave produced by a point source at infinity even though the RMC's are diffraction limited at the He-Ne wavelength of 632.8 nm. The expanded beam passes through the grid pairs at a small angle
doi:10.1364/ao.35.006714
pmid:21151253
fatcat:4kjzdurxzjhmbenrr3l7u6drpq