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Proceedings Paper

Generalized model for beam-path variation induced by spherical mirrors' radial displacements in square ring resonator and its applications in backscattering coupling effect
Author(s): Meixiong Chen; Jie Yuan; Zhenglong Kang; Xingwu Long; Fei Wang; Jian Zhou; Xudong Yu
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Paper Abstract

Based on augmented ray matrix approach, a generalized model for beam-path variation induced by spherical mirrors' radial displacements has been established. The model can be applied to analyze beam-path variation induced by all the possible perturbation sources in various ring resonators. Backscattering coupling coefficient r is obtained as a function of mirrors' radial displacements. Some novel results of backscattering coupling effect have been obtained. The results indicate that radial displacements cause bigger beam-path variation than the same value of axial displacements. r can not be reduced to zero because of the initial machining errors of terminal surfaces of plane mirrors. However, r can be reduced to almost zero when stabilizing frequency of laser gyro by adjusting the radial displacements of spherical mirrors. This generalized model is useful for the cavity design, cavity improvement, and alignment of planar ring resonators. The model is also useful for controlling the shape of laser beams and researching backscattering coupling effect in high precision laser gyroscopes.

Paper Details

Date Published: 5 May 2012
PDF: 9 pages
Proc. SPIE 8429, Optical Modelling and Design II, 84291Q (5 May 2012); doi: 10.1117/12.922590
Show Author Affiliations
Meixiong Chen, National Univ. of Defense Technology (China)
Jie Yuan, National Univ. of Defense Technology (China)
Zhenglong Kang, National Univ. of Defense Technology (China)
Xingwu Long, National Univ. of Defense Technology (China)
Fei Wang, National Univ. of Defense Technology (China)
Jian Zhou, National Univ. of Defense Technology (China)
Xudong Yu, National Univ. of Defense Technology (China)


Published in SPIE Proceedings Vol. 8429:
Optical Modelling and Design II
Frank Wyrowski; John T. Sheridan; Jani Tervo; Youri Meuret, Editor(s)

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