Phonon-Limited-Linewidth of Brillouin Lasers at Cryogenic Temperatures
Phonon-Limited-Linewidth of Brillouin Lasers at Cryogenic Temperatures
Laser linewidth is of central importance in spectroscopy, frequency metrology, and all applications of lasers requiring high coherence. It is also of fundamental importance, because the Schawlow-Townes laser linewidth limit is of quantum origin. Recently, a theory of stimulated Brillouin laser (SBL) linewidth has been reported. While the SBL linewidth …