基于LabVIEW与MATLAB混合编程的Z-Scan测量系统设计

Design of Mixed-language Programming Z-scan Measurement System Based on LabVIEW and MATLAB

针对Z扫描实验系统数据量大、稳定性要求高以及数据处理的实际需要,设计了一种基于LabVIEW和MATLAB混合编程的全自动激光Z-scan测量系统,用以表征样品非线性光学特性。运用LabVIEW2012开发平台,实现对实验系统测量的全自动控制,通过在LabVIEW环境中的MATLAB Script节点直接调用MATLAB数值分析程序,实现对实验数据的自动拟合,从而直接得到非线性光学系数。通过标准样品CS2的定标测试,测得三阶非线性折射率系数与已报道数据相符,且测量过程迅速。实验表明,该系统利用LabVIEW和MATLAB软件的优势互补,简化了繁琐的手动操作,成功实现了Z-scan系统的自动测量和数据处理的整合,提高了测量的准确性和效率。

A mixed-language programming full automatic laser Z-scan measurement system based on Lab- VIEW and MATLAB is designed to express nonlinear optical features of samples. Full automatic control of experi- mental system measurement is realized using LabVIEW2012 development platform. MATLAB data analysis pro- gram is directly called through MATLAB Script node in LabVlEW environment so as to fit experimental data auto- matically and the nonlinear optical coefficient is obtained directly. Based on the calibration test of standard sample CS2, the measured third-order nonlinear refraction coefficient accords with the reported data, and the measurement process is rapid. Experimental results show that the complex manual operation is simplified by the system, automat- ic measurement of Z-scan system and integration of data processing are realized successfully. And the accuracy and efficiency of the measurement are improved.