A high-contrast grating structure for direction-tunable laser emissions

https://phys.org/news/2023-01-playing-angles-high-contrast-direction-tunable-lasing.html

"wide range -40° to +40° beam-steering... multi-angle lasing field up to 80°... laser cavity using a one-dimensional suspended high-contrast grating structure that gave rise to Friedrich-Wintgen BIC. This type of BIC originates from coupling of two resonance states residing in same cavity and radiating over the same emission channel... does not require external passive components to modulate emission angle... higher power efficiency... large-scale, high-resolution laser scanning... lidar and 3D sensing"

Related: Scientists achieve phonon and photon lasing in optomechanical cavities

https://phys.org/news/2023-01-scientists-phonon-photon-lasing-optomechanical.html