Gong Tianle, Ouyang Hangkong, Ma Li, Zhao Zhijie, Rong Weibin. Beam Precision Coupling Method and Experiment of Ring Laser Gyroscope[J]. Chinese Journal of Lasers, 2020, 47(6): 601009
- Chinese Journal of Lasers
- Vol. 47, Issue 6, 601009 (2020)
Fig. 1. Principle diagrams of laser gyro beam coupling assembly. (a) Beam coupling element; (b) beam coupling principle
Fig. 2. Overall structure of light integration system
Fig. 3. Schematic of motion process of photodetector on combined prism. (a) Arbitrary position of photodetector; (b) ideal assembly position of photodetector
Fig. 4. Optical path models of combined prism rotating around z axis. (a) Optical path model before rotation; (b) optical path model after rotation
Fig. 5. Amplitude difference and light intensity of detected signal when photodetector moves. (a) Amplitude difference curve when moving along y' axis; (b) light intensity curve when moving along x' axis
Fig. 6. Adjustment strategy of photodetector and combined prism
Fig. 7. Phase difference of combined light signal in the rotation of combined prism
Fig. 8. Beam precision coupling assembly system
Fig. 9. Laser gyro beam coupling signal
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Table 1. Experimental assembly results of laser gyro
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