Illustration of a spin-valley Rashba monolayer laser (IMAGE)

Technion-Israel Institute of Technology

Illustration of a spin-valley Rashba monolayer laser

Caption

The spin-valley optical microcavity is constructed by interfacing an inversion-asymmetric (yellow core region) and an inversion-symmetric (cyan cladding region) photonic spin lattice. By virtue of a photonic Rashba-type spin splitting of a bound state in the continuum, this heterostructure enables a selective lateral confinement of the emergent photonic spin-valley states inside the core for high-Q resonances. Consequently, the coherent and controllable spin-polarized lasing (red and blue beams) is achieved from valley excitons in an incorporated WS2 monolayer (purple region).

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Scholardesigner co, LTD

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