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

fYear

2008

fDate

Sept. 29 2008-Oct. 4 2008

Firstpage

59

Lastpage

61

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/CAOL.2008.4671965

Filename

4671965