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New possibilities were established for controlling the characteristics of a YAG:Nd 3+ solid-state ring laser (SSRL) by inserting a resonantly absorbing medium—a nonpumped YAG:Nd 3+ crystal—in the resonator. A new multimode lasing regime was observed for a rotating SSRL. A strong dependence of the amplitudefrequency characteristics of a rotating SSRL on the detuning of the gain and absorption lines was established. "Spiky" instability of the emission from a rotating SSRL was observed in the range of frequency splittings of the opposite waves near the relaxation frequency. It was found that this instability was eliminated in the forced mode-locking regime. A change of the lasing regime in an SSRL was accompanied by strong hysteresis and memory effects.
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A. N. Shelaev (1983) studied this question.
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