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Journal Articles Optics Letters Year : 2023

Monolithically integrated photonic crystal surface emitters on silicon with a vortex beam by using bound states in the continuum

Haochuan Li
Mingchu Tang
  • Function : Author
Taojie Zhou
  • Function : Author
Wentao Xie
  • Function : Author
Renjie Li
Yuanhao Gong
  • Function : Author
Siming Chen
  • Function : Author
Huiyun Liu
  • Function : Author
Zhaoyu Zhang
  • Function : Author

Abstract

Optical resonant cavities with high quality factor ( Q -factor) are widely used in science and technology for their capabilities of strong confinement of light and enhanced light–matter interaction. The 2D photonic crystal structure with bound states in the continuum (BICs) is a novel concept for resonators with ultra-compact device size, which can be used to generate surface emitting vortex beams based on symmetry-protected BICs at the Γ point. Here, to the best of our knowledge, we demonstrate the first photonic crystal surface emitter with a vortex beam by using BICs monolithically grown on CMOS-compatible silicon substrate. The fabricated quantum-dot BICs-based surface emitter operates at 1.3 µm under room temperature (RT) with a low continuous wave (CW) optically pumped condition. We also reveal the BIC's amplified spontaneous emission with the property of a polarization vortex beam, which is promising to provide a novel degree of freedom in classical and quantum realms.
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Dates and versions

hal-04216915 , version 1 (25-09-2023)

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Haochuan Li, Mingchu Tang, Taojie Zhou, Wentao Xie, Renjie Li, et al.. Monolithically integrated photonic crystal surface emitters on silicon with a vortex beam by using bound states in the continuum. Optics Letters, 2023, 48 (7), pp.1702. ⟨10.1364/OL.484472⟩. ⟨hal-04216915⟩
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