In optical experiments,it is usually necessary to filter,expand and collimate the laser beam,but literatures did not provide this information.Many students who are new to optical experiments may encounter some problems and spend too much time when dealing with the spatial pinhole filtering and collimation of laser beams,which seriously affects the progress and results of experiments.This paper elaborately introduces the adjustment techniques for spatial pinhole filtering and paral-lel light collimation,and some relevant experimental equipment,and gives a conclusion,hoping to help beginners quickly master the adjustment methods.
维普
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