单光束紫外分光光度计波长准确度分析与修正  

Analysis and Correction of Wavelength Accuracy of Single-beam UV Spectrophotometer

作　　者：陈建波 林冠宇[1] 杨小虎[1] CHEN Jian-bo;LIN Guan-yu;YANG Xiao-hu(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院长春光学精密机械与物理研究所,吉林长春130033 [2]中国科学院大学,北京100049

出　　处：《仪表技术与传感器》2023年第2期27-33,共7页Instrument Technique and Sensor

基　　金：国家重点研发计划项目(2018YFB0504600);中国电波传播研究所稳定支持科研经费资助项目(A132001W03)。

摘　　要：为了提高单光束紫外分光光度计的波长准确度,基于光栅色散原理对影响紫外分光光度计系统波长输出准确度的各项因素及特征进行了分析,提出了将结构修正与光学定标修正相结合的综合波长修正方法。利用该综合修正方法对研制的单光束紫外分光光度计进行波长修正,修正后在100~400 nm波段范围内的波长精度由±0.2 nm提高到±0.07 nm。实验结果证明了单光束紫外分光光度计波长准确度分析的合理性以及结构修正与光学定标修正相结合的综合波长修正方法的有效性。In order to improve the wavelength accuracy of the single-beam UV spectrophotometer,the factors and characteristics affecting the wavelength output accuracy of the UV spectrophotometer system were analyzed based on the grating dispersion theory,and comprehensive wavelength correction method combining of structural correction and optical calibration correction was proposed.This comprehensive correction method was used to correct the wavelength of the single-beam UV spectrophotometer developed in the laboratory.After correction,the wavelength accuracy in the range of 100~400 nm was improved from±0.2 nm to±0.07 nm.The experimental results demonstrate the rationality of the wavelength accuracy analysis of the single-beam UV spectrophotometer and the effectiveness of the comprehensive wavelength correction method combining structural correction and optical calibration correction.

关 键 词：分光光度计 波长准确度 波长精度 波长修正 凹面光栅 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]