The Virtual Simulation Of The Laser Gyro

As one of the most idealist components in the strap-down inertial navigation system, the ring laser gyro are studied by many countries in the world, but the laser gyro technology in our country are following behind some advanced countries. Along with the latist development of computer technology and simulation technology, in this paper, the computer simulation technology was applied to the theoretical study of ring laser gyro, and do some simulated experiment of some theoretical phenomena, and also applied virtual instrument technology in the simulation, in this way, we can save some time and outlay in studying laser gyro.The key components in laser gyro is He-Ne ring laser, and the reciprocal action theory between light and medium is the base in studying the ring laser, use the Lamb half classical theory, and on the base of density matrix theory, the optical Brounch equation was established, which described the movement of amplifying medium atom in the ring syntonic cavity, and according to the medium polarize theory the self consistent equations was deduced, which describe the light intensity and phasic of the counter-propagating wave. On the basis of this equations, adopted the simulation software MATLAB and virtual instrument programming language LabWindows/CVI, we can do some simulated experiments in study the phenomenas such as amplify and dispersive characteristic of medium, mode pushing effection, burned hole effection and pattern competition, lock-in of frequency and the characteristic of light intensity and phasic of the counter-propagating wave in laser gyro. Full quanta theory was used in analysis the working principle of laser, educed the photon states of single pattern radiate in two energy-step system, and simulated the establishment of laser mode and statistical distribute of photon.According to elf consistent equations of RLG; build the simulated program with LabWindows/CVI and do some simulation experiments,The result of simulation matched the theory perfect perfectly and conform to the experiments, the locked-in and pattern competition coursed the periodic light intensity.