Spin-decoupling of vertical cavity surface-emitting lasers with complete phase modulation using on-chip integrated Jones matrix metasurfaces

Pei-Nan Ni, Pan Fu, Pei-Pei Chen (), Chen Xu, Yi-Yang Xie () and Patrice Genevet ()
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Pei-Nan Ni: Centre de Recherche sur l’Hétéro-Epitaxie et ses Applications (CRHEA)
Pan Fu: Beijing University of Technology
Pei-Pei Chen: National Center for Nanoscience and Technology
Chen Xu: Beijing University of Technology
Yi-Yang Xie: Beijing University of Technology
Patrice Genevet: Centre de Recherche sur l’Hétéro-Epitaxie et ses Applications (CRHEA)

Nature Communications, 2022, vol. 13, issue 1, 1-10

Abstract: Abstract Polarization response of artificially structured nano-antennas can be exploited to design innovative optical components, also dubbed “vectorial metasurfaces”, for the modulation of phase, amplitude, and polarization with subwavelength spatial resolution. Recent efforts in conceiving Jones matrix formalism led to the advancement of vectorial metasurfaces to independently manipulate any arbitrary phase function of orthogonal polarization states. Here, we are taking advantages of this formalism to design and experimentally validate the performance of CMOS compatible Jones matrix metasurfaces monolithically integrated with standard VCSELs for on-chip spin-decoupling and phase shaping. Our approach enables accessing the optical spin states of VCSELs in an ultra-compact way with previously unattainable phase controllability. By exploiting spin states as a new degree of freedom for laser wavefront engineering, our platform is capable of operating and reading-out the spin-momentum of lasers associated with injected spin carriers, which would potentially play a pivotal role for the development of emerging spin-optoelectronic devices.

Date: 2022
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DOI: 10.1038/s41467-022-34977-0

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