Ultrashort Pulse Generation in Nanolasers by Means of Lorenz–Haken Instabilities

Nearly half a century ago, the German physicist Hermann Haken proved that laser dynamics could be described, under certain conditions, by Lorenz equations, paradigm of deterministic chaos. Unfortunately, its experimental realization has remained elusive for conventional materials and cavities mostly due to extreme pumping conditions low cavity quality factors (“bad-cavity condition”) required achieve Lorenz–Haken (L-H) self-pulsing upon continuous wave excitation. In this paper, it is theoretically dielectric plasmonic nanolasers, can naturally fulfill bad-cavity condition, may overcome limitations macroscopic make observation L-H instabilities in visible-IR solid-state become reality. Remarkably, adequate choice active material design enables generation trains ultrashort pulses sub-ps regime with MHz–GHz repetition rates without need resorting neither mode-locking nor Q-switching techniques. Thus, results reported manuscript unveil new at nanoscale.