Taming Friedrich–Wintgen Interference in a Resonant Metasurface: Vortex Laser Emitting at an On-Demand Tilted Angle - Archive ouverte HAL Access content directly
Journal Articles Nano Letters Year : 2023

Taming Friedrich–Wintgen Interference in a Resonant Metasurface: Vortex Laser Emitting at an On-Demand Tilted Angle

Raphael Mermet-Lyaudoz
  • Function : Author
Clémentine Symonds
Florian Berry
  • Function : Author
Emmanuel Drouard
Céline Chevalier
  • Function : Author
Gaëlle Trippé-Allard
  • Function : Author
Emmanuelle Deleporte
  • Function : Author
Joel Bellessa
Hai Son Nguyen

Abstract

Friedrich–Wintgen (FW) interference is an atypical coupling mechanism that grants loss exchange between leaky resonances in non-Hermitian classical and quantum systems. Intriguingly, such a mechanism makes destructive interference possible for scenarios in which a radiating wave becomes a bound state in the continuum (BIC) by giving away all of its losses. Here we propose and demonstrate experimentally an original concept to tailor FW-BICs with polarization singularity at on-demand wavevectors in an optical metasurface. As a proof-of-concept, using hybrid organic–inorganic halide perovskite as an active material, we empower this novel polarization singularity to obtain lasing emission, exhibiting both highly directional emission at oblique angles and a polarization vortex in momentum space. Our results pave the way to steerable coherent emission with a tailored polarization pattern for applications in optical communication/manipulation in free space, high-resolution imaging/focusing, and data storage.

Dates and versions

hal-04260812 , version 1 (26-10-2023)

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Cite

Raphael Mermet-Lyaudoz, Clémentine Symonds, Florian Berry, Emmanuel Drouard, Céline Chevalier, et al.. Taming Friedrich–Wintgen Interference in a Resonant Metasurface: Vortex Laser Emitting at an On-Demand Tilted Angle. Nano Letters, 2023, 23 (10), pp.4152-4159. ⟨10.1021/acs.nanolett.2c04936⟩. ⟨hal-04260812⟩
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