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.

中文翻译：

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Nd :YVO4 环形激光器中反向传播波的相互作用

我们已经通过实验研究了 Nd :YVO ₄固态环形激光器 (SSRL) 在环形腔的相位非互易性存在的情况下的双向激光和自调制状态的静止状态。发现在反向传播波的频率匹配范围内的发射光谱比在 Nd :YAG SSRL 中窄得多。当匹配机制中相位非互易性增加时，其中一个反向传播波被抑制，并且该机制不会切换到拍频机制。