厦门大学学报（自然科学版）2017，Vol.56Issue(2)：220-225,6.DOI:10.6043/j.issn.0438-0479.201610016
基于物体对称性实现旋转多普勒效应的优化测量
Optimal Measurement of Rotation Doppler-frequency Shifts Based on Rotational Symmetry
齐倩倩 1陈灿斌 1徐天哲 1张武虹 1陈理想1
作者信息
- 1. 厦门大学物理科学与技术学院,福建厦门361005
- 折叠
摘要
Abstract
In order to quickly and efficiently measure the rotational speed of the symmetric, we devise an optimal method with high coupling efficiency to measure the rotational Doppler-frequency shifts by analyzing the orbital angular momentum of the light scattered from a rotating mask based on the digital spiral imaging theory.In our experiment,the rotating object is mimicked by holograms of special symmetry displayed on the spatial light modulator.The experimental results show that the proposed scheme can obtain the oribital angular momentum (OAM) spectrums of clover and ten leaf clover with high signal-to-noise ratio quickly and efficiently.Compared with the theoretical results,the error in our experiments is about 0.7%.Our scheme offers a high-efficiency method of Doppler-frequency shift measurement,adding the potential for remote detection of spinning objects.关键词
轨道角动量/旋转多普勒效应/数字螺旋成像理论/遥感技术Key words
orbital angular momentum(OAM)/rotational Doppler-frequency shifts/digital spiral imaging theory/remote sensing technology分类
数理科学引用本文复制引用
齐倩倩,陈灿斌,徐天哲,张武虹,陈理想..基于物体对称性实现旋转多普勒效应的优化测量[J].厦门大学学报（自然科学版）,2017,56(2):220-225,6.
