The mode-locking transition of random lasers

mode_locking 

The discovery of the spontaneous mode-locking of lasers, that is, the self-starting synchronous oscillation of electromagnetic modes in a cavity, has been a milestone of photonics allowing the realization of oscillators delivering ultrashort pulses. In a paper published on Nature Photonics we shown that the random laser can be continuously driven from a configuration exhibiting weakly interacting electromagnetic resonances to a regime of collectively oscillating strongly interacting modes.

 

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