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LUO Shi-rong, LÜ Bai-da. MG2 factor of truncated Laguerre-Gaussian beams[J]. LASER TECHNOLOGY, 2004, 28(2): 199-201.
Citation: LUO Shi-rong, LÜ Bai-da. MG2 factor of truncated Laguerre-Gaussian beams[J]. LASER TECHNOLOGY, 2004, 28(2): 199-201.

MG2 factor of truncated Laguerre-Gaussian beams

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  • Received Date: May 25, 2003
  • Revised Date: July 08, 2003
  • Published Date: March 24, 2004
  • 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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