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Observation of superoscillation moire superlattices
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DOI：10.1117/1.AP.8.2.026008.png)
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Abstract
En 中文
Superoscillation (SO) wavefunctions in light waves, which locally oscillate faster than its fastest Fourier component, have enhanced optical technologies beyond diffraction limits but have not yet been controlled in 2D lattices. Here, we report the 2D superoscillation lattices (SOLs) with controlled symmetries, where the local wavevector can be similar to 700 times larger than the global maximal wavevector (k(0)) in a localized region similar to 100 times smaller than the global minimal wavelength (lambda(0)). We also demonstrate the superoscillation superlattices (SOSLs) as twisted bilayer moir & eacute; patterns of two SOLs; akin to the magic angle tuning in advanced twistronics, we can continually tune the on-demand SO with local maximal wavevector in a range of 450 k(0) to 700 k(0) and with similar to lambda(0) / 100 to lambda(0) / 1000 . The SOSL will advance optical imaging and metrology into extreme higher-dimensional superresolution.
Keywords:
superoscillation
superlattices
twistronics
moir & eacute
lattice
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18.8
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