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A comment on Metasurface Solves Calculus Problems as Analog Computer.
- A lens acts as a Fourier transform on an optical signal.
- d/dx is multiplication by ik in the frequency domain.
- They made a spatial reflection profile r(x) ~ ix using an array of nanobricks of different sizes (optimized with simulation)
- Optical signal -> lens -> reflection from metasurface -> lens = spatial derivative.
I have the paper if anyone wants it and doesn't have access.
- A lens acts as a Fourier transform on an optical signal.
- d/dx is multiplication by ik in the frequency domain.
- They made a spatial reflection profile r(x) ~ ix using an array of nanobricks of different sizes (optimized with simulation)
- Optical signal -> lens -> reflection from metasurface -> lens = spatial derivative.
I have the paper if anyone wants it and doesn't have access.