High-angle deflection of metagrating-integrated laser emission for high-contrast microscopy
Integration of curved GaAs metagratings onto VCSELs enables a compact on-chip illumination solution for high-contrast microscopy, making it a versatile choice for light sources in lab-on-a-chip devices.

Mindaugas JuodėnasErik StrandbergMikael Käll
Article
Open Access
13 Oct 2023

Unlocking the out-of-plane dimension for photonic bound states in the continuum to achieve maximum optical chirality
We unlock the height as accessible parameter of all-dielectric metasurfaces, allowing polarization-selective interaction of their high-Q eigenstates with light of different helicity and promoting ultra-narrow maximally chiral optical resonances.

Lucca KühnerFedja J. WendischAndreas Tittl
Article
Open Access
12 Oct 2023

Polychromatic metasurfaces for complete control of phase and polarization in the mid-infrared
You ZhouJonathan A. Fan
News & Views
Open Access
08 Oct 2023

Valence conversion and site reconstruction in near-infrared-emitting chromium-activated garnet for simultaneous enhancement of quantum efficiency and thermal stability
Significant improvement of quantum efficiency and thermal stability of NIR-emitting Ca3Y2-2x(ZnZr)xGe3O12:Cr was achieved by chemical unit cosubstitution, benefiting from valence reduction of Cr4+ to Cr3+ and reconstructed rigid crystal structure.

Dongjie LiuGuogang LiJun Lin
Article
Open Access
07 Oct 2023