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Volume 28 Issue 2
Sep.  2013
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MG2 factor of truncated Laguerre-Gaussian beams

  • Received Date: 2003-05-26
    Accepted Date: 2003-07-09
  • The generalized beam propagation factor(MG2 factor) of circularly symmetric truncated Laguerre-Gaussian beams is studied using the generalized truncated second-order moments method. A closed-form expression for the MG2 factor is derived and illustrated with numerical example. It is found that the MG2 factor of circularly symmetric truncated Laguerre-Gaussian beams depends on the truncation parameter and beam order,and asymptotically approaches the value of circularly symmetric untruncated Laguerre-Gaissain beams as the truncated parameter increases.
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通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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MG2 factor of truncated Laguerre-Gaussian beams

  • 1. Institute of Laser Physics & Chemistry, Sichuan University, Chengdu 610064, China;
  • 2. College of Physics & Communication Electronics, Jiangxi Normal University, Nanchang 330027, China

Abstract: The generalized beam propagation factor(MG2 factor) of circularly symmetric truncated Laguerre-Gaussian beams is studied using the generalized truncated second-order moments method. A closed-form expression for the MG2 factor is derived and illustrated with numerical example. It is found that the MG2 factor of circularly symmetric truncated Laguerre-Gaussian beams depends on the truncation parameter and beam order,and asymptotically approaches the value of circularly symmetric untruncated Laguerre-Gaissain beams as the truncated parameter increases.

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