论文部分内容阅读
本文提出了一种新的激光光纤准直方法。利用光传播的平行性和直线性 ,光学准直技术被用于精密地建立几何参数的测量基准 ,在这些应用中 ,光束、处理电路的漂移、杂散光是影响测量精度的主要因素。为了消除这些影响 ,本文利用调制半导体激光技术和光纤技术形成准直光束 ,四象限探测器进行探测 ,相敏检波技术对光电调制信号进行解调 ,所有的信号共享同一信号处理信道 ,且光束的调制频率远离杂散光的频率范围 ,激光光束漂移杂散光、电路漂移被抑制 ,在 1m范围获得了 0 3μm的准直精度。
This paper presents a new laser fiber alignment method. Utilizing the parallelism and linearity of light propagation, optical collimation techniques are used to precisely establish the basis for the measurement of geometrical parameters. In these applications, the drift of the light beam, processing circuitry, and stray light are the main factors that influence the measurement accuracy. In order to eliminate these effects, this paper uses the modulated semiconductor laser technology and optical fiber technology to form a collimated beam, four-quadrant detector to detect, phase sensitive detection technology to demodulate the optical modulation signal, all signals share the same signal processing channel, and the beam Modulation frequency away from the stray light frequency range, the laser beam drift stray light, the circuit drift is suppressed in the 1m range obtained 0 3μm collimator accuracy.