期刊文献+

用K参数描述光强陡峭度的有效性研究 被引量:1

Applicability of kurtosis parameter characterizing the degree of sharpness of beam intensity distribution
在线阅读 下载PDF
导出
摘要 光束光强分布的陡峭度或平整度通常可用陡峭度参数(K参数)来描述。以双曲余弦-高斯光束、贝塞尔函数调制的高斯光束和平顶高斯光束3种光束为例,给出了详细的数值计算和物理解释。研究表明,K参数只适用于描述呈钟形光束剖面的陡峭度,但不适用于有强衍射旁瓣、强调制或有中心凹陷的光束。 It is known that usually the degree of sharpness (or flatness) of beam intensity distribution is described by the kurtosis parameter ( K parameter),Taking cosh-Gaussian ( ChG),Bessel-modulated Gaussian ( QBG),and flattened Gaussian (FG) beams as three illustrative examples,detailed numerical calculations and physical interpretations were given, It is shown that the K parameter is suited essentially to characterize the sharpness of the bell-shape beam profile,but not applicable to beams with large diffraction sidelobes,large intensity modulations,and beams with central shadow。
出处 《激光技术》 CAS CSCD 北大核心 2005年第4期426-428,共3页 Laser Technology
基金 国家高技术基金资助项目(A823070)
关键词 光束描述 陡峭度参数(K参数) 双曲余弦-高斯光束 贝塞尔函数调制的高斯光束 平顶高斯光束 beam characterization kurtosis parameter ( K parameter ) cosh-Gaussian ( ChG ) beam Bessel-modulated Gaussian(QBG) beam flattened Gaussian (FG)beam
作者简介 康小平(1964-),女,副教授,博士,现从事激光传输与变换的研究。E—mail:xpk710@126.com
  • 相关文献

参考文献8

  • 1SIEGMAN A E. New developments in laser resonators [J]. SPIE,1990,1224:2 - 14.
  • 2MARTINEZ-HERRERO R, PIQUERO G, MEJIAS P M. On the propagation of the kurtosis parameter of general beams [ J ]. Opt Commun,1995,115:225 - 232.
  • 3HRICHA Z, DALIL-ESSAKALI L,IBNCHAIKH M et al. Kurtosis factor of some truncated and non-truncated laser beams [ J ]. Phys Chem News,2001,3 (9) : 11 - 16.
  • 4COLLINS S A. Lens-system diffraction integral written terms of matrix optics [J].J O S A,1970,60(7) :1168 -1177.
  • 5BOCK R D. Multivariate statistical method in behavioral research[ M ]. New York : McGraw-Hill, 1975.71.
  • 6CASPERSON L W, HALL D G, TOVAR A A. Sinusoidal-Gaussian beams in complex optical systems [ J ]. J O S A, 1997, A14 ( 12 ) :3341 - 3348.
  • 7CARON C F R, POTVLIEGE R M. Bessel-modulated Gaussian beams with quadratic radial dependence [ J ]. Opt Commun, 1999,164:83 -93.
  • 8GORI F. Flattened gaussian beams [ J]. Opt Commun, 1994,107:335-341.

同被引文献4

引证文献1

二级引证文献3

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部