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.
P
photonic_sorcerer@lemmy.dbzer0.com
@photonic_sorcerer@lemmy.dbzer0.com
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Ultra-thin lenses that make infrared light visible -
Cleaning plastic containers in a dishwasher is a source of microplastic pollution, study findsThe overall plastic mass equated to about 6 milligrams per person per year, or about a quarter of the weight of a grain of rice