Applied Physics B

, 124:72 | Cite as

Large astigmatic laser cavity modes and astigmatic compensation

  • T. D. Huang
  • T. H. Lu


In this paper, it was experimentally verified that anisotropic (astigmatic) Hermite–Gaussian modes can be generated from a hemi-cylindrical cavity and can be transformed into Laguerre–Gaussian modes by using an extra-cavity plano-convex cylindrical lens which can modify different beam divergence angle in the xz and yz planes. By controlling the off-axis pumping and the angle of the extra-cavity cylindrical lens, a variation in laser patterns was observed. Moreover, several additional relationships under different conditions have been analyzed. All experimental results corresponding to the theoretical analysis, and the role of the hemi-cylindrical cavity can be completely understood by comparing the theoretical and experimental results.



The authors thank the Ministry of Science and Technology for their financial support of this research under Contract No. MOST 106-2112-M-003-011.


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Copyright information

© Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of PhysicsNational Taiwan Normal UniversityTaipeiTaiwan

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