Comment on Ultra-thin lenses that make infrared light visible

photonic_sorcerer@lemmy.dbzer0.com ⁨1⁩ ⁨week⁩ ago

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.

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