<title>Fast Fourier transform (FFT) analysis of CO laser beam mode based on personal computer (PC) and workstation</title>

Abstract

Computer models have been developed for the beam mode analysis of CO laser. The models are improved from the authors' previous one which was deduced from asymptotic method. In order to analyze by the variety of PCs (jersonal computers) and workstations, two types of computer codes have been developed. The compact code is described in language C, which can be compiled by most of PCs. The simple code is described in Mathematica, of which high-level mathematical functions are useful. Both codes are carried out under the same conditions and compared.