The propagation characteristics of the MultiGaussian beams (MGB) and SuperGaussian beams (SGB) have been studied and compared with each other, based on the Wigner distribution function and irradiance moments method. The characteristic parameters of MultiGaussian beams (MGB), such as the M2 factor and beam width, are derived analytically. Numerical examples have been given. The main result obtained in this paper is that two MGB and SGB with the same M2 factor present a similar transverse irradiance distribution at a position of the equal generalized Fresnel number despite the fact that the beam width and propagation distance may be different.
{"title":"A COMPARISON STUDY ON THE PROPAGATION CHARACTERISTICS OF FLATTENED GAUSSIAN BEAMS AND SUPER-GAUSSIAN BEAMS","authors":"Luo Shi-rong, L. Bai-da, Zhang Bin","doi":"10.7498/aps.48.1446","DOIUrl":"https://doi.org/10.7498/aps.48.1446","url":null,"abstract":"The propagation characteristics of the MultiGaussian beams (MGB) and SuperGaussian beams (SGB) have been studied and compared with each other, based on the Wigner distribution function and irradiance moments method. The characteristic parameters of MultiGaussian beams (MGB), such as the M2 factor and beam width, are derived analytically. Numerical examples have been given. The main result obtained in this paper is that two MGB and SGB with the same M2 factor present a similar transverse irradiance distribution at a position of the equal generalized Fresnel number despite the fact that the beam width and propagation distance may be different. ","PeriodicalId":17119,"journal":{"name":"Journal of Southwest China Normal University","volume":"166 1","pages":"1446-1451"},"PeriodicalIF":0.0,"publicationDate":"1999-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86737969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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