Title :
Adaptive optics for laser beam control
Author :
Samarkin, V.V. ; Kudryashov, A.V.
Author_Institution :
Adaptive Opt. for Ind. & Med. Application Group, Acad. of Sci., Moscow, Russia
Abstract :
This paper presents the novel adaptive optical closed loop system (ACLS) for compensation of the laser beam aberrations and results of its application in high power lasers. A closed-loop adaptive algorithm is developed to control for deformable bimorph mirror. The control voltages applied to all electrodes reduce the wavefront variations measured by a Hartmann-Shack wavefront sensor (SHWS). Adaptive system can correct for the low-order aberrations in the real-time - the frequency of corrected aberrations is 25 (30) Hz. The amplitude of such aberrations - about 7 microns. It is shown also the successful application of the developed ACLS for correction of aberration of different kinds of lasers.
Keywords :
aberrations; adaptive optics; laser beams; laser mirrors; wavefront sensors; Hartmann-Shack wavefront sensor; adaptive optical closed loop system; adaptive optics; closed-loop adaptive algorithm; control voltages; deformable bimorph mirror; electrodes; high power lasers; laser beam aberrations compensation; laser beam control; low-order aberrations; wavefront variations; Adaptive algorithm; Adaptive optics; Closed loop systems; Laser beams; Mirrors; Optical beams; Optical control; Optical sensors; Power lasers; Voltage control;
Conference_Titel :
4thLaser and Fiber-Optical Networks Modeling, 2002. Proceedings of LFNM 2002. International Workshop on
Print_ISBN :
0-7803-7372-3
DOI :
10.1109/LFNM.2002.1014080
