Frequency Response of a Ring Laser with an Alternating Frequency Pedestal

The purpose of this work was to build the frequency response (FR) of a ring laser with an alternating frequency pedestal (FP). FP characteristic feature allows us to use the approximation that simplifies calculations. We used this approximation method in earlier works devoted to ring lasers with FP of a simple type, however, the results of the previous research could not be used in this paper because this time we examined FP of a completely different type. Consequently, we had to change the approach to the FR calculation: in a specific way we converted the equation describing the phase dynamics of the beat signal, to a system of coupled equations. The result of applying this method allowed us to obtain an algorithm for approximate calculation of the beat frequency in the function of the measured difference of the natural frequencies of the resonator. Computer implementation gave an opportunity to build the static FR ring laser with FP of a complex type. To control the accuracy of the obtained results, we built FR ring laser with simple FP of meander type, previously investigated in other ways.

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