Title :
Influence of spatial wavefront characteristics of laser radiation on quality intracavity modal correction
Author :
Podoprigora, Aleksey G.
Author_Institution :
Volgograd State Tech. Univ.
Abstract :
The laser systems supplied by an adaptive optical system allow obtaining output beam with high quality spatial-power characteristics. The efficiency of functioning of adaptive optical system phase conjugation with modal correcting by the bimorph deformable mirror of the resonator was investigated. The form of a mirror surface was modeled by Zernic polynom, and wavefront was modeled by the spline-interpolation of the limited set of random numbers. In the decision of the task of formation of operation action on a deformed mirror various methods of optimization were used. The influence of a standard deviation and relative entropy both of phases and angles of the slopes of the wavefront on quality of correction was examined. The quality of correction was estimated on static and dynamic errors of wavefront reconstruction. Moreover connection among spatial characteristics of a radiation beam was estimated
Keywords :
Zernike polynomials; adaptive optics; error correction; laser beams; laser cavity resonators; laser mirrors; optical phase conjugation; splines (mathematics); Zernic polynom; adaptive optical system; adaptive optical system phase conjugation; bimorph deformable mirror; dynamic errors; laser radiation; laser systems; mirror surface; optimization; quality intracavity modal correction; random numbers; relative entropy; resonator; spatial wavefront characteristics; spatial-power characteristics; spline-interpolation; standard deviation; static errors; wavefront reconstruction; wavefront slopes; Adaptive optics; Adaptive systems; Laser beams; Laser modes; Mirrors; Optical resonators; Optical surface waves; Optimization methods; Spline; Surface waves;
Conference_Titel :
Laser and Fiber-Optical Networks Modeling, 2005. Proceedings of LFNM 2005. 7th International Conference on
Conference_Location :
Yalta, Crimea
Print_ISBN :
0-7803-9147-0
DOI :
10.1109/LFNM.2005.1553189
