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用于干涉式示差折光仪的检测极限研究的相位误差预估技术研究

Phase Error Evaluation Technique for Differential Refractometry Detection Limit

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摘要

本文发展了一种基于傅立叶变换的相位误差预估技术来计算干涉条纹的相位误差,从而得出干涉式示差折光仪的理论检测极限的新方法。本文通过模拟计算了相位误差的精度为3.4×10-8×2π rad,即折光仪理论检测极限为2.2×10-12 RIU。模拟结果与以往文献中实验数据对比证明此技术的可行性。同时,我们也详细讨论了干涉条纹的相位误差的精度与CCD探测器的像元尺寸、比特深度以及干涉条纹的空间周期的关系,模拟结果给出了优化的CCD参数及干涉系统参数。这种技术为进一步实现示差折光系统的实验参数选择以及检测极限的研究提供了理论指导。

Abstract

Without considering the noise,this paper developed a new phase error estimation technique based on Fourier transform to calculate the phase error of interference fringes. In this paper,the accuracy of phase error was calculated by simulation is 34×10-8×2π rad. The simulation results were compared with the actual experiment to prove the feasibility of this technique. The accuracy of the phase error of the interference fringes is related to the pixel size of the CCD detector,the bit depth and the space period of the interference fringes,which was also discussed in detail in this paper. This technique is conducive to the refractive index of the CCD detector parameter selection and detection limit of the study.

Newport宣传-MKS新实验室计划
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中图分类号:O562;O436

DOI:10.3788/jqo20182404.0204

基金项目:国家自然科学基金(61471254)

收稿日期:2018-05-11

修改稿日期:2018-05-17

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韩东波:太原理工大学 新型传感器与智能控制教育部重点实验室物理与光电工程学院,山西 太原 030024

联系人作者:韩东波(15536098552@163.com)

备注:韩东波(1992-), 男, 硕士, 主要研究方向为光学传感技术。

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引用该论文

HAN Dong-bo. Phase Error Evaluation Technique for Differential Refractometry Detection Limit[J]. Acta Sinica Quantum Optica, 2018, 24(4): 385-390

韩东波. 用于干涉式示差折光仪的检测极限研究的相位误差预估技术研究[J]. 量子光学学报, 2018, 24(4): 385-390

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