Non-linear interferometry with infrared metasurfaces

Non-linear interferometry with infrared metasurfaces
Non-linear interferometry with infrared metasurfaces
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Publication Date:
20 March 2021
Paterova, A. V., Kalashnikov, D. A., Khaidarov, E., Yang, H., Mass, T. W. W., Paniagua-Domínguez, R., … Krivitsky, L. A. (2021). Non-linear interferometry with infrared metasurfaces. Nanophotonics, 10(6), 1775–1784. doi:10.1515/nanoph-2021-0011
The optical elements comprised of sub-diffractive light scatterers, or metasurfaces, hold a promise to reduce the footprint and unfold new functionalities of optical devices. A particular interest is focused on metasurfaces for manipulation of phase and amplitude of light beams. Characterisation of metasurfaces can be performed using interferometry, which, however, may be cumbersome, specifically in the infrared (IR) range. Here, we realise a new method for characterising metasurfaces operating in the telecom IR range using accessible components for visible light. Correlated IR and visible photons are launched into a non-linear interferometer so that the phase profile, imposed by the metasurface on the IR photons, modifies the interference at the visible photon wavelength. Furthermore, we show that this concept can be used for broadband manipulation of the intensity profile of a visible beam using a single IR metasurface. Our method unfolds the potential of quantum interferometry for the characterization of advanced optical elements.
License type:
Attribution 4.0 International (CC BY 4.0)
Funding Info:
QTE program of A*STAR project № A1685b0005, the A*STAR SERC Pharos programme (grant number 152 73 00025, Singapore)
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