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四频激光陀螺在高低温实验中的零漂变化非常复杂,温度单方向变化时零漂会呈振荡形式,这是四频激光陀螺温度效应中一个难以解释和解决的难题。在常温下改变四频激光陀螺的放电电流来模拟变温过程中光强的变化,发现零漂随光强的变化也呈现出振荡形式。从而得知,导致四频激光陀螺变温过程中零漂振荡的一个主要因素是温度单方向变化导致光强的变化,而光强的变化导致零漂的改变。如果四频激光陀螺的光强能够在高低温实验中保持不变,则零漂在高低温变化中的剧烈振荡会得到有效的抑制。通过光强稳定控制下的高低温实验,证明以上结论是正确的。
The zero drift of the quadrupole laser gyro in the high and low temperature experiments is very complicated. The zero drift will appear in the form of oscillation when the temperature changes unidirectionally, which is a difficult problem to be solved and solved in the temperature effect of the quadrupole laser gyro. Changing the discharge current of the quadrupole laser gyro at room temperature to simulate the change of light intensity during the temperature change, we found that the variation of zero drift with the light intensity also shows the oscillation form. Therefore, it is known that one of the main factors causing the zero-drift oscillation during the temperature change of the quadrupole laser gyro is the change of the light intensity caused by the unidirectional temperature change, and the change of the light intensity causes the change of the zero drift. If the light intensity of the quad-band laser gyro can be kept constant in high and low temperature experiments, the severe oscillation of zero drift during the high and low temperature changes will be effectively suppressed. Through the stability of the light intensity under high and low temperature experiments, the above conclusion is correct.