Title :
Laser beam quality measurements
Author_Institution :
V.N. Karazin Kharkiv Nat. Univ., Ukraine
Abstract :
Usually a laser beam is a mixture of Hermite-Gauss or Laguerre-Gauss modes. These beams don´t change their shape when propagating through first order optics. Then kurtosis, on-axis intensity, and Strehl ratio will be invariant or dependent on main parameters such as widths and areas. They can be used only for additional characterization or as criteria of noise, high order aberrations, etc. Quality of astigmatic, twisted, partially coherent, and other types of complex beams can be completely described by second order, generalized or power content areas
Keywords :
Wigner distribution; aberrations; laser beams; laser modes; Hermite-Gauss modes; Laguerre-Gauss modes; Strehl ratio; astigmatic beams; first order optics; high order aberrations; laser beam quality measurements; on-axis intensity; partially coherent laser beams; power content areas; second order areas; twisted laser beams; Apertures; Diffraction; Distribution functions; Laser beams; Lenses; Position measurement; Power lasers; Q factor; Zirconium;
Conference_Titel :
Laser and Fiber-Optical Networks Modeling, 2001. Proceedings of LFNM 2001. 3rd International Workshop on
Conference_Location :
Kharkiv
Print_ISBN :
0-7803-6680-8
DOI :
10.1109/LFNM.2001.930228
