Control of laser radiation parameters

Interaction of counterpropagating waves in a Nd : YVO₄ ring laser

E. G. Lariontsev, V. V. Firsov, S. N. Chekina

Lomonosov Moscow State University, Skobeltsyn Institute of Nuclear Physics

Abstract: We have experimentally studied the stationary regime of bidirectional lasing and self-modulation regimes in a Nd : YVO₄ solid-state ring laser (SSRL) in the presence of phase nonreciprocity of the ring cavity. It is found that the emission spectrum in the regime of frequency matching of counterpropagating waves is much narrower than in a Nd : YAG SSRL. When the phase nonreciprocity increases in the matching regime, one of the counterpropagating waves is suppressed, and this regime does not switch to the beat regime.

Keywords: solid-state ring laser, frequency matching of counterpropagating waves, optical nonreciprocity, self-modulation oscillations.

Received: 09.09.2019
Revised: 24.05.2021

 English version: Quantum Electronics, 2021, 51:7, 597–600

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