Laser Spectrum Measurement and Correction Based on Virtual Instrument Techniques

According to the requirements of laser beams´ spectrum measurement and correction, the laser spectrum measurement constructed with WDS4A and WDS4C raster and based on virtual instruments (Vis) technique are provided. The detailed methods and applied programs based on techniques of Graphical programming for instrumentations platform Lab VIEW are also introduced. After the description to the principles and the construction of the laser spectrum measure system, the policies to software and modules of the system are carefully discussed, including software structure and system driver configuration, raster control module, spectrum energy measure module, and spectrum calibration module. Meanwhile, the details to realize the laser spectrum correction methods and the raster control for the test are delivered. At last, measure data of the CO₂ laser spectrums based on VI techniques in practical implement of different environment are given. Practical examples indicate that, by the use of VI technique, the precision is excelled to plusmn0.015 mum as well as the automation levels have been improved.