中文摘要：

在这份报纸，一种技术基于激光，为获得脉搏波浪侧面的自我混合的效果被建议并且示威。为在人的脉搏波浪的极其弱的颤动的特征，有外部洞的多重思考的一个方法被设计改进测量精确性到 /4。基于数算法的穗，脉搏波浪的一个时期成功地被重建。测量结果证明重建的脉搏波浪的根均方差(RMSE ) 是以 8 kHz 的采样率的 0.912 m。而且，关联系数和这个方法和传统的 photoplethysmography (PPG ) 的心敲击测量被分析。

英文摘要：

In this paper, a technique based on laser self-mixing effect for acquiring pulse wave profile is proposed and demonstrated. For the characteristics of extremely weak vibration in human pulse waves, a method of multiple reflections with external cavity is designed to improve the measurement accuracy to λ/4. Based on the fringe counting algorithm, one period of pulse wave is successfully reconstructed. The measurement results show that the root mean square error（RMSE） of the reconstructed pulse wave is 0.912 μm at sampling rate of 8 k Hz. Besides, the correlation coefficients and heart beats of this method and the traditional photoplethysmography（PPG） measurement are analyzed.