Laser diodes are semiconductors that generate light and amplify it using repeated reflection or "optical feedback." Once the ...

Optical lattices (OLs) with diverse transverse patterns and optical vortex lattices (OVLs) with special phase singularities have played important roles in the fields of atomic cooling, particle ...

For the first time, scientists have demonstrated that negative refraction can be achieved using atomic arrays—without the ...

Photonic crystal surface-emitting lasers or PCSELs are laser diodes that generate laser beams through controlled light wave interaction within a photonic crystal structure. In a recent study, ...

A research team at POSTECH has developed a novel multidimensional sampling theory to overcome the limitations of flat optics.

Scientists have found a way to achieve negative refraction—where light bends the "wrong" way—using carefully arranged atomic arrays instead of engineered metamaterials. This breakthrough has enormous ...

Researchers developed a numerical simulation technique for light wave interactions in triangular-lattice PCSELs, enhancing ...