This article is cited in 1 paper

Lasers

Spontaneous phase symmetry breaking in a gas coupled-cavity ring laser

I. I. Zolotoverkh, E. G. Lariontsev

Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics

Abstract: A theoretical model is proposed that describes the lasing dynamics in a gas ring laser (GRL) with coupled cavities. The conditions are found under which spontaneous phase symmetry of counterpropagating waves is broken in the GRL with an antiphase optical coupling of the cavities. It is shown that in the case of spontaneous phase symmetry breaking, two branches appear on the GRL frequency characteristic. In some region of frequency nonreciprocity of a ring cavity, both branches can exist under the same conditions. In this case, radiation bistability appears in the GRL, and hysteresis phenomena can be observed.

Keywords: gas ring laser, coupled cavities, beat mode, phase nonreciprocity, spontaneous symmetry breaking.

Received: 08.11.2018
Revised: 30.01.2019

 English version: Quantum Electronics, 2019, 49:7, 653–656

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