Replica Symmetry Breaking in the Photonic Ferromagneticlike Spontaneous Mode-Locking Phase of a Multimode Nd:YAG Laser

Physical Review Letters
André L MouraCid B de Araújo

Abstract

We demonstrate the replica symmetry breaking (RSB) phenomenon in the spontaneous mode-locking regime of a multimode Q-switched Nd:YAG laser. The underlying mechanism is quite distinct from that of the RSB recently observed in random lasers. Here, there is no random medium and the phase is not glassy with incoherently oscillating modes as in random lasers. Instead, in each pulse a specific subset of longitudinal modes are activated in a nondeterministic way, whose coherent oscillation dominates and frustrates the others. The emergence of RSB coincides with the onset of ultrashort pulse generation typical of the spontaneous mode-locking regime, both occurring at the laser threshold. On the other hand, when high losses are introduced, RSB is inhibited and only the amplified stimulated emission with replica symmetry is observed. Our results disclose the only theoretically predicted photonic phase with RSB that remained unobserved so far.

References

Apr 12, 2006·Physical Review Letters·L AngelaniF Zamponi
Mar 5, 2009·Physical Review Letters·L LeuzziG Ruocco
Jan 20, 1993·Applied Optics·P MyslinskiJ R Simpson
Jan 15, 2015·Nature Communications·N GhofranihaC Conti
Aug 26, 2016·Scientific Reports·Supratim BasakCefe López

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Citations

Jul 10, 2019·Physical Review Letters·D PierangeliC Conti
Feb 16, 2020·Scientific Reports·Anirban SarkarJonathan Andreasen
Nov 20, 2018·Scientific Reports·Iván R R GonzálezAnderson S L Gomes
Apr 17, 2021·Physical Review Letters·Shane P KellyJamir Marino

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