Nonlinear Dynamics in Semiconductor Lasers - Abstract

Rotter, Stefan

Photon and phonon lasing at the exceptional point

I will review my group's activity on the effects that exceptional points have on both a conventional laser as well as on a phonon laser. As opposed to an optical laser, that operates as a coherent source of light, the phonon laser produces coherent mechanical oscillations (sound). For this latter device we could recently predict and observe a considerable broadening of the laser line when approaching the exceptional point.