PHONON LASERS. “A crystal that is “blind” to electromagnetic waves with wavelengths of about several hundred nanometres and “deaf” to sound at similar wavelengths within the crystal…The ability to make structures with both types of band gap could lead to breakthroughs in the field of acousto-optics.”
https://lnkd.in/ehwDYhR
linkedin post 2022-06-29 05:12:48
Nigel Fleming
September 21, 2022