Fig. 5: The schematic of the infrared imaging technique based on the Si metasurface and its converted imaging with the signal wavelength at 1700 nm. | Light: Science & Applications

Fig. 5: The schematic of the infrared imaging technique based on the Si metasurface and its converted imaging with the signal wavelength at 1700 nm.

From: Broadband infrared imaging governed by guided-mode resonance in dielectric metasurfaces

Fig. 5: The schematic of the infrared imaging technique based on the Si metasurface and its converted imaging with the signal wavelength at 1700 nm.

a The schematic diagram of infrared imaging based on FWM via the Si metasurfaces. b The image of the target and metasurface under white light source illumination. c, d Transformed visible images of the target via metasurfaces under signal and pump beam illumination with the signal wavelength. The pump wavelength is fixed at 1130 nm

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