2 September 2010 Coherence effects: from spectral change to nondiffraction
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Abstract
We have studied the interference of light produced by a pair of circularly symmetric Collett-Wolf beams, and found that the output radiation from the interferometer in the far-field is a beam with an intensity distribution that displays a narrow bright spot at its center that diverges with the distance from the sources much more slowly than the beam itself. This result suggests that the interference of a pair of symmetric Collett-Wolf beams can be used to produce a pseudo-nondiffracting beam. We have also studied the temporal average over an ensemble of realizations of the output power spectrum of the interference of light produced by a pair of circularly symmetric Collett-Wolf beams, which causes a change in the spectrum of the light as well.
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Zu-Han Gu, Zu-Han Gu, } "Coherence effects: from spectral change to nondiffraction", Proc. SPIE 7792, Reflection, Scattering, and Diffraction from Surfaces II, 77920U (2 September 2010); doi: 10.1117/12.859139; https://doi.org/10.1117/12.859139
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