The Gaussian beam and the design of the laser micro beam scope

This paper stipulates the common rule of sign about the parametersin the principal formulae of the Gaussian beam,which makes the formu-lae convenient for the calulation of the complicated optical path.In this paper,the main points of design of the laser microbeam scopeare analysed.In addition,the acguirement of the laser micro spot,theco-focal planes between focussing system and observing system,the selec-tion of the objective aperture,the influence of the exchanging the micro-scope objectives and discussed。The principles,methods and procedures of design of laser optics areconcluded briefly.