This innovative structure exhibits highly efficient circularly polarized light emission in the red to near-infrared range, as well as the peculiar whispering gallery mode resonance depicted on the right. This property could be leveraged in advanced optics applications and lasers. Credit: Ken Albecht / Kyushu University Circularly polarized light has properties that make it useful in a growing range of technologies, from next-generation 3D displays to bioimaging tools that can detect signals deep within living tissues. One way to produce this kind of light is with the help of chiral molecules—compounds that have a mirror-image form to which they cannot be perfectly superimposed. Among these, small organic molecules (SOMs) offer tunable emission wavelengths. Luminescent radicals represent a promising type of SOM for red and near-infrared circularly polarized luminescence (CPL) emission.…