光纤激光陀螺镜在超短脉冲测量中的应用研究

The Application of the Laser Fiber Gyro Lens in Utrashort Pulse Measurement

介绍了采用光纤激光陀螺镜测量超短脉冲宽度、形状、相位时的应用理论,以及相关群速度色散的补偿办法。利用可以自行调节旋转角速度的光纤陀螺镜作为光学延迟线实现旋转角速度的任意连续调整,并在使用归一化的Gerchberg-Saxton算法中实现过程自动控制。克服了原有测量方法中因时延一定,只能作一次自相关处理,及把时延测量变为路径测量时准确性差和测量精度有限的缺点。利用高精度单光子计数系统对相干光包络进行测量,极大地提高了测量精度,进一步拓宽了超短脉冲在物理、生物、化学以及超高速光纤通信等领域的应用范围。

The applied theory of the measurement on ultrashort pulse width shape and phase with a laser fiber gyro lens is introduced; By using the fiber gyro lens as a optical delay line which can adjust rotating angular velocity automatically, we can realize the arbitrarily continuous adjustment of rotating angular velocity. With the normalized algorithm of Gerchberg-Saxton, we can realize the process control automation. In this way we overcame the shortcoming of low veracity and limited precision caused by fixed time-delay; By using the single-photon counter system to test the envelope of coherent light, the precision improved greatly. The application foreground on physics, biology, chemistry and overspeed optic communication is widened by the research.