Li, H;
Tang, M;
Zhou, T;
Xie, W;
Li, R;
Gong, Y;
Martin, M;
... Zhang, Z; + view all
(2023)
Monolithically integrated photonic crystal surface emitters on silicon with a vortex beam by using bound states in the continuum.
Optics Letters
, 48
(7)
pp. 1702-1705.
10.1364/OL.484472.
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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.
| Type: | Article |
|---|---|
| Title: | Monolithically integrated photonic crystal surface emitters on silicon with a vortex beam by using bound states in the continuum |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1364/OL.484472 |
| Publisher version: | https://doi.org/10.1364/OL.484472 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Optics, LASERS |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Electronic and Electrical Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10171133 |
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