Ultra-thin lenses that make infrared light visible
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- A team of physicists at ETH Zurich has created a tiny metalens that can half the wavelength of incident light.
- They have achieved this using a special metal-oxide lens material called lithium niobate and through nanoscale pattern, stamped into the material.
- Such metalenses could be used as a security feature on banknotes or in the fabrication of ultra-thin elements for cameras.
Ultra-thin lenses that make infrared light visible
Physicists at ETH Zurich have developed a lens with magic properties. Ultra-thin, it can transform infrared light into visible light by halving the wavelength of incident light.
ETH Zurich (ethz.ch)
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S Science shared this topic on
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- A team of physicists at ETH Zurich has created a tiny metalens that can half the wavelength of incident light.
- They have achieved this using a special metal-oxide lens material called lithium niobate and through nanoscale pattern, stamped into the material.
- Such metalenses could be used as a security feature on banknotes or in the fabrication of ultra-thin elements for cameras.
Ultra-thin lenses that make infrared light visible
Physicists at ETH Zurich have developed a lens with magic properties. Ultra-thin, it can transform infrared light into visible light by halving the wavelength of incident light.
ETH Zurich (ethz.ch)
Pretty sweet stuff - they combined metalens tech (lens miniaturization) with a nonlinear optical material (Lithium niobate). The physics of harmonic generation is amazing by itself: light entering such a crystal induces photons of a smaller wavelength to be emitted.
