A new breakthrough in the field of phonon lasing has been announced: scientists have successfully observed phonon lasing in a crystal for the first time. This breakthrough could revolutionize the way we use light and sound in many applications.

Phonon lasing is a process of creating stimulated emission of phonons, which are the particles of sound. This is similar to the process of lasing, which creates stimulated emission of light particles, or photons. By studying phonon lasing, scientists are now able to observe the fluorescence spectrum of phonons: a spectrum of light created when phonons interact with a material. This could have huge implications for the fields of light and sound manipulation, with potential applications in medical imaging, communication, and more.

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source: Phys.org