Metasurfaces 2.0: Laser-integrated and with vector field control

The past decade has witnessed the rapid development of metasurfaces. In this paper, we outline our thinking on what regard as two important trends in metasurface research, namely, continual improvement light field modulation capacity metasurfaces and integration with other devices to achieve fully contained optical systems. We first describe one fastest growing branches former, which is known metasurface-based vectorial holography. This aims control wavefront polarization state a beam simultaneously. comparison single function devices, i.e., those that modulate or but not both, holography represents significant ability fields. then discuss lasers for goal direct output generation beams tailored orbital angular momenta. Two methods doing so are discussed, on-facet in-cavity integration. hope Perspective will provide readers new insights thus help extend applications devices.