Title :
Dynamic phase masks for focal spot optimization and shaping of cw and high-power laser beams
Author :
Wattellier, B.F. ; Sauteret, C.J. ; Zou, J.-P. ; Migus, A.
Author_Institution :
Lab. pour l´Utilisation des Lasers Intenses, Paris VI Univ., France
Abstract :
Summary form only given.In the last few years, many solutions have been implemented to correct the wavefront of intense laser beams. Most of them use an adaptive mirror to achieve this correction. At LULI, we have developed in collaboration with Thomson-CSF a liquid-crystal optically addressed electro-optical valve (OAEOV) approach to induce phase shifts onto the beam. Coupled with an achromatic three-wave lateral shearing interferometer (ATWLSI), it provides an improved correction due to its high resolution. We managed to correct the wavefront of our 100-TW Nd:glass laser down to the fluctuation level.
Keywords :
adaptive optics; laser beams; laser fusion; laser mirrors; light valves; liquid crystal devices; neodymium; optical focusing; optimisation; phase shifting masks; solid lasers; 100 TW; LULI; TW Nd:glass laser; achromatic three-wave lateral shearing interferometer; cw high-power laser beams; dynamic phase masks; fluctuation level; focal spot optimization; high resolution; intense laser beams; liquid-crystal optically addressed electro-optical valve; phase shifts; Laser beams;
Conference_Titel :
Lasers and Electro-Optics, 2000. (CLEO 2000). Conference on
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
1-55752-634-6
DOI :
10.1109/CLEO.2000.907362
