由倍频晶体器件实现被动稳定的多振荡器固态激光陀螺仪

Multi-oscillator solid-state laser gyro passively stabilized by a frequency-doubling crystal device

Abstract

本发明总体上涉及一种由倍频晶体器件实现被动稳定的多振荡器固态激光陀螺仪,用于测量角速度或相对于定义的转动轴的角位置。所述激光陀螺仪包括:光学环形腔(1);固态放大介质(2);以及非互易磁光设备(12,13,14),这些组件被设置为使得四个线性偏振的传播模式可以在腔中传播,磁光设备在传播于第一方向上的模式和传播于相反方向上的模式之间引入频偏。在本发明的设备中,腔还包括稳定器设备(20),用于在基本上等效的程度上稳定四个传播模式的强度,所述设备包括至少一个由倍频类非线性晶体制作而成的光学元件。
The invention substantially relates to a multi-oscillator solid-state laser gyro passively stabilized by a frequency-doubling crystal device. The laser gyro for measuring the angular velocity or the angular position relative to a defined rotation axis includes: an optical ring cavity (1); a solid-state amplifying medium (2); and a non-reciprocal magneto-optic device (12, 13, 14); which are arranged so that four linearly polarized propagation modes can propagate within the cavity, the magneto-optic device introducing a frequency bias between the modes propagating in a first direction and the modes propagating in the opposite direction. In the device, the cavity also includes a stabilizer device (20) for stabilizing the intensity of the four propagation modes at substantially equivalent levels, said device comprising at least one optical element made of a non-linear crystal of the frequency-doubling type.

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