Multifrequency Solid-State Ring Laser Gyroscope Based on YAG:Cr4+

We report our recent progress towards a multifrequency solid-state ring laser gyro, based on the YAG:Cr
⁴⁺
broadband gain medium and operating in the mode-locking regime. Improved stability and reduced noise are achieved as the result of mode-locking. A model of the bidirectional generation dynamics during mode-locking, based on the Lamb theory, is provided. The readout system of beat signals of counterpropagating waves is demonstrated. The influence of the phase and the depth of modulation on the stable mode-locking is measured. Furthermore, lasing parameters, ensuring maximum accuracy of angular measurements, are determined.