Phonon lasers unlock ultrabroadband acoustic frequency combs
• Acoustic frequency combs organize sound or mechanical vibrations into a series of evenly spaced frequencies, much like the teeth on a comb. • They are the acoustic counterparts o
Phonon
Terahertz spectroscopy finds nitrogen can lengthen GaAs-like LO phonon decay
• An Osaka Metropolitan University-led research team investigated the decay time of coherent longitudinal optical (LO) phonons both in a GaAs1−xNx epilayer and in a GaAs single cry