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photonic crystal surface-emitting laser (PC-SEL) that emits in the blue-violet wavelength range. Kyoto University Susuma Noda

Far-field pattern (beam Pattern) shows a reflecting large-area oscillation with very narrow divergence angle (less than 1 °).

The unique beam pattern can be focused to a spot much less than the emitted wavelengths.

Image Credit: Susumu Noda

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