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.
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S Science shared this topic
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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.
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.
