激光器线宽虚拟测试系统  

Linewidth Measurement Virtual System of Lasers

作　　者：肖华菊[1,2] 王翔[2] 张洁[1] 

机构地区：[1]西南交通大学机械工程学院,四川成都610031 [2]中物院流体物理研究所冲击波物理与爆轰物理实验室,四川绵阳621900

出　　处：《计算机测量与控制》2011年第8期1861-1863,1867,共4页Computer Measurement &Control

基　　金：国防科技重点实验室基金资助项目(9140C6713020904)

摘　　要：为了测试窄线宽激光器的线宽,设计了一种基于虚拟仪器技术的激光器线宽自动测试系统;该测试系统硬件平台基于GPIB总线,以示波器作为高精度的数据采集设备,软件系统以LabVIEW为开发平台,可以实时采集和处理光电流时域信号;利用该系统对IPG公司1550nm波长的窄线宽光纤激光器进行测量,测得线宽值为32kHz;实验结果表明,该系统响应快,精度高,运行可靠,具有良好的工程应用意义。System based on the virtual instrument technique was designed to measure laser＇ s narrow linewidth, the hardware is based on GPIB and software is developed on LabVIEW, This system can real--time sample and analyze the measurement. The power spectrum of the photo current could be shown through processing the measurement, spectrum lineshape of beat is identical with that of the laser under tested, and the linewidth was calculated by the Lorentz fitting method. Results show that the system is feasible, fast and accurate, and it has a good effect on engineering application.

关 键 词：虚拟仪器 LABVIEW 线宽 测试系统 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置] TN247[自动化与计算机技术—控制科学与工程]