Title :
Femtosecond laser beam correction by means of adaptive optics
Author :
Samarkin, Vadim ; Alexandrov, Alexander ; Zavalova, Valentina ; Kudryashov, Aleksei ; Rukosuev, Alexei ; Sheldakova, Yulia
Author_Institution :
Moscow State Open Univ., Shatura
fDate :
Sept. 29 2008-Oct. 4 2008
Abstract :
Closed-loop adaptive optical system based on phase-conjugate algorithm and including deformable bimorph mirror and Shack-Hartmann wavefront sensor was developed and studied. The examples of application of this system for wavefront correction and improvement of the beam focusability in the femtosecond pulse lasers produced for fundamental research in the field of high energy physics are presented. In several laser systems based on active elements Ti:Al2O3 with the output pulse energy up to 5 J and the pulse power up to 100 TW a Strehl ratio was increased from 0.1 to 0.8 by means of adaptive optics.
Keywords :
adaptive optics; high-speed optical techniques; laser beams; mirrors; optical focusing; optical phase conjugation; sapphire; titanium; wavefront sensors; Al2O3:Ti; Shack-Hartmann wavefront sensor; active elements; beam focusability; closed-loop adaptive optical system; deformable bimorph mirror; femtosecond laser beam correction; high energy physics; phase-conjugate algorithm; wavefront correction; Adaptive optics; Adaptive systems; Laser beams; Laser theory; Mirrors; Optical pulses; Optical sensors; Power lasers; Sensor systems; Ultrafast optics; Shack-Hartmann sensor; deformable mirror; sapphire laser; titanium; wavefront correction;
Conference_Titel :
Advanced Optoelectronics and Lasers, 2008. CAOL 2008. 4th International Conference on
Conference_Location :
Crimea
Print_ISBN :
978-1-4244-1973-9
Electronic_ISBN :
978-1-4244-1974-6
DOI :
10.1109/CAOL.2008.4671965
