Di Nan,Zhao Jian-lin.Reducing magnetic zero drift by optimizing proportions of neon dual isotopes in laser gyros[J].Optoelectronics Letters,2012,8(2):153-156 Reducing magnetic zero drift by optimizing proportions of neon dual isotopes in laser gyros Author Name Affiliation Di Nan  Key Laboratory of Optical Information Technology of Shaanxi Province of China, Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education of China, School of Science, Northwestern Polytechnical University, Xi’an 710072, China  Zhao Jian-lin  Key Laboratory of Optical Information Technology of Shaanxi Province of China, Key Laboratory of Space Applied Physics and Chemistry, Ministry of Education of China, School of Science, Northwestern Polytechnical University, Xi’an 710072, China  Abstract:       The relationships among the proportions of the neon dual isotopes ratio, scale factor corrections (SFCs), light intensities, environmental magnetic field and magnetic zero drift are discussed in detail by numerical simulations. The results show that the unification of the optimal operating point (OP) and the frequency stabilization operating point (FSP) is achievable by adjusting the proportions of neon dual isotopes accurately and tuning the cavity length with frequency stabilization system exactly. In that case, the left-rotation and right-rotation gyros can obtain the same SFC, which can decrease the magnetic sensitivity of the laser gyro efficiently. The Zeeman effect zero drift and the Faraday bias zero drift are both reduced by two orders of magnitude, while the magnetic shielding requirement of laser tube is decreased by 1–2 orders of magnitude. Hits: 3966 Download times: 469 This work has been supported by the Science Foundation of Aeronautics of China (No.20090853014 View Full Text    Download reader