Chinese Journal of Lasers, Volume. 47, Issue 6, 601009(2020)
Beam Precision Coupling Method and Experiment of Ring Laser Gyroscope
Figures & Tables(10)
Fig. 1. Principle diagrams of laser gyro beam coupling assembly. (a) Beam coupling element; (b) beam coupling principle
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. 7. Phase difference of combined light signal in the rotation of combined prism
Table 1. Experimental assembly results of laser gyro
View tableTable 1. Experimental assembly results of laser gyro
No. Amplitude A /V Amplitude B /V Phase difference / (°) Amplitude difference / % Retest amplitude A /V Retest amplitude B /V Retest phase difference / (°) Retest amplitude difference / % Eligibility 1 14.41 14.49 90.01 1.78 14.41 14.45 90.72 0.89 Yes 2 14.15 14.30 90.47 3.64 14.14 14.31 90.67 4.23 Yes 3 14.34 14.34 90.22 0.01 14.49 14.46 90.24 0.68 Yes 4 15.53 15.57 89.15 0.73 14.85 14.80 88.15 1.03 Yes 5 15.02 15.00 88.96 0.40 14.83 14.93 89.13 1.94 Yes 6 14.71 14.72 90.71 0.21 14.55 14.7 90.54 3.12 Yes 7 14.29 14.35 91.47 1.49 14.16 14.17 91.77 0.34 Yes 8 15.22 15.24 90.9 0.36 15.13 15.14 90.38 0.39 Yes 9 14.49 14.51 89.78 0.55 14.57 14.57 89.83 0.01 Yes 10 14.92 14.93 89.09 0.20 15.14 15.17 89.01 0.59 Yes
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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
Paper Information
Category: laser devices and laser physics
Received: Nov. 6, 2019
Accepted: --
Published Online: Jun. 3, 2020
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