High Precision Position Measurement Method for Laguerre-Gaussian Beams Using a Quadrant Detector

doi:10.3390/s18114007

CORC > 长春光学精密机械与物理研究所 > 中国科学院长春光学精密机械与物理研究所

	High Precision Position Measurement Method for Laguerre-Gaussian Beams Using a Quadrant Detector
	Li, Q.; Wu, J. B.; Chen, Y. S.; Wang, J. Y.; Gao, S. J.; Wu, Z. Y.
刊名	Sensors
	2018
卷号	18 期号:11 页码:11
关键词	position measurement method quadrant detector Laguerre-Gaussian beams least square method effective radius detection free-space propagation improvement angle Chemistry Electrochemistry Instruments & Instrumentation
ISSN号	1424-8220
DOI	10.3390/s18114007
英文摘要	In this paper, we propose a new method to improve the position measurement accuracy for Laguerre-Gaussian beams on a quadrant detector (QD). First, the error effects of the detector diameter and the gap size are taken into account, and the position error compensation factor is introduced into the conventional formula. Then, in order to reduce the number of parameters, the concept of effective radius is proposed. Thus, a new analytical expression is obtained with a best fit using the least square method. It is verified by simulation that this approach can reduce the maximum error by 97.4% when the beam radius is 0.95 mm; meanwhile, the root mean square errors under different radii are all less than 0.004 mm. The results of simulation show that the new method could effectively improve the accuracy of the QD measurement for different radii. Therefore, the new method would have a good prospect in the engineering practice of beam position measurements.
内容类型	期刊论文
源URL	[http://ir.ciomp.ac.cn/handle/181722/60684]
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Li, Q.,Wu, J. B.,Chen, Y. S.,et al. High Precision Position Measurement Method for Laguerre-Gaussian Beams Using a Quadrant Detector[J]. Sensors,2018,18(11):11.
APA	Li, Q.,Wu, J. B.,Chen, Y. S.,Wang, J. Y.,Gao, S. J.,&Wu, Z. Y..(2018).High Precision Position Measurement Method for Laguerre-Gaussian Beams Using a Quadrant Detector.Sensors,18(11),11.
MLA	Li, Q.,et al."High Precision Position Measurement Method for Laguerre-Gaussian Beams Using a Quadrant Detector".Sensors 18.11(2018):11.