Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Suppressing meta-holographic artifacts by laser coherence tuning   A metasurface hologram combines fine spatial resolution and large viewing
angles with a planar form factor and compact size. However, it suffers coherent
artifacts originating from electromagnetic cross-talk between closely packed
meta-atoms and fabrication defects of nanoscale features. Here, we introduce an
efficient method to remove all artifacts by fine-tuning the spatial coherence
of illumination. Our method is implemented with a degenerate cavity laser,
which allows precise, continuous tuning of spatial coherence over a wide range
with little variation in emission spectrum and total power. We find the optimal
degree of spatial coherence to remove the coherent artifacts of a meta-hologram
while maintaining the image sharpness. This work paves the way to compact and
dynamical holographic display free of coherent defects.

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The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: hep-ex
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The categories of this paper are: q-bio
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The categories of this paper are: plasm-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: alg-geom
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The categories of this paper are: solv-int
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The categories of this paper are: cond-mat
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The categories of this paper are: q-fin
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The categories of this paper are: math
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The categories of this paper are: hep-lat
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The categories of this paper are: hep-th
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The categories of this paper are: math-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: dg-ga