Ms. Xiao-Qing He Profile

Xiao-Qing He

at Northwest Univ.

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Proceedings Article | 20 August 2011 Paper

The investigation on mirrors maladjustment for RLG

Xiao-qing He, Ai-hua Gao, Shang-bin Hu, Zhi-guo Lu

Proceedings Volume 8192, 81921B (2011) https://doi.org/10.1117/12.899748

KEYWORDS: Mirrors, Gyroscopes, Signal detection, Resonators, Optical simulations, Laser processing, Laser applications, Laser resonators, Spherical lenses, Calibration

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In order to meet the high demand of the entire technology processing, the error compensation method is usually used to correct them and is premised on a good understanding of error sources and the law of the errors. In this paper, based on the theories of Collins's Integral and Collins's EIKONAL Function and the MATLAB software, we simulated and calculated the spatial distribution of optical beam in the cavity of the ring laser gyro under the resonator's maladjustment caused by the technology processing. From the simulation results, we can get that to the small-gain lasers, the same amount of disorders in the different structures have different effects on the spatial distribution of the beam, and the structures using the spherical mirrors relatively have the small impact on the beam; under the same disorder in the same cavity shape, the signal light and the calibration light which are respectively detected from the mirror M₁ and M₄ are different; under the same structures, different mirrors with the same amount of disorder will cause the different beat frequency difference; because of the disorders, the spot centers of clockwise and counterclockwise waves happen shift and will seriously affect the normal operation of the laser gyro if the imbalance reaches a certain degree. This work has a guiding role in the mirror adjustment of the laser gyros' technology processing, and has a reference value to the survival rate of the laser gyros and the improvement of measurement accuracy.

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