تقرير
Topological transformations of speckles
| العنوان: | Topological transformations of speckles |
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| المؤلفون: | Gateau, Jerome, Claude, Ferdinand, Tessier, Gilles, Guillon, Marc |
| المصدر: | Optica, Optical Society of America (OSA), 2019, 6 (7), pp.914-920 |
| سنة النشر: | 2019 |
| المجموعة: | Physics (Other) |
| مصطلحات موضوعية: | Physics - Optics |
| الوصف: | Deterministic control of coherent random light is highly important for information transmission through complex media. However, only a few simple speckle transformations can be achieved through diffusers without prior characterization. As recently shown, spiral wavefront modulation of the impinging beam allows permuting intensity maxima and intrinsic $\pm 1$-charged optical vortices. Here, we study this cyclic-group algebra when combining spiral phase transforms of charge $n$, with $D_3$- and $D_4$-point-group symmetry star-like amplitude modulations. This combination allows statistical strengthening of permutations and controlling the period to be 3 and 4, respectively. Phase saddle-points are shown to complete the cycle. These results offer new tools to manipulate critical points in speckles. Comment: 14 pages, 10 figures, 4 tables |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1364/OPTICA.6.000914 |
| URL الوصول: | http://arxiv.org/abs/1901.11497 |
| رقم الأكسشن: | edsarx.1901.11497 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1364/OPTICA.6.000914 |
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