Improved method for phonon lasers locks sound waves into a more stable and powerful state

https://phys.org/news/2024-09-method-phonon-lasers-stable-powerful.html

"lasers using sound instead of light... tiny electronic nudge enhances laser-produced sound wave power, precision... locks sound waves into more stable, powerful state... phonon lasers create more sensitive, less harmful medical imaging techniques, while deep-sea vehicles could implement improved communication and navigation. Phonon lasers could also have applications in material science, quantum computing, and other fields. This research represents a significant step forward in phonon laser development"