Share Email Print
cover

Proceedings Paper

Laser beam focusing through the atmosphere aerosol
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Distortions of the scattered laser beam (λ=0.65μm) were numerically estimated by means of Shack-Hartmann technique and experimentally measured. The ability to focus laser beam, passed through the scattering suspension of polystyrene microspheres in distilled water, using bimorph deformable mirror was investigated both numerically and experimentally. Shack-Hartmann technique was used to measure the local slopes of the Poynting vector, and CCD camera was used to analyze the intensity distribution of the focal spot in the far-field. Bimorph deformable mirror with 14 electrodes was utilized in order to increase the focusing efficiency of the laser beam. The voltages to be applied to the mirror electrodes were calculated using three techniques: LSQ (least squares) fit-error minimization by Shack-Hartmann sensor, Hillclimbing optimization by Shack-Hartmann sensor and Hill-climbing optimization by the far-field CCD camera.

Paper Details

Date Published: 6 September 2017
PDF: 14 pages
Proc. SPIE 10410, Unconventional and Indirect Imaging, Image Reconstruction, and Wavefront Sensing 2017, 104100M (6 September 2017); doi: 10.1117/12.2276180
Show Author Affiliations
Ilya Galaktionov, Institute of Geosphere Dynamics (Russian Federation)
Univ. of Mechanical Engineering (Russian Federation)
Alexis Kudryashov, Institute of Geosphere Dynamics (Russian Federation)
V. E. Zuev Institute of Atmospheric Optics (Russian Federation)
Julia Sheldakova, Institute of Geosphere Dynamics (Russian Federation)
Vadim Samarkin, Institute of Geosphere Dynamics (Russian Federation)
Alexander Nikitin, Institute of Geosphere Dynamics (Russian Federation)


Published in SPIE Proceedings Vol. 10410:
Unconventional and Indirect Imaging, Image Reconstruction, and Wavefront Sensing 2017
Jean J. Dolne; Rick P. Millane, Editor(s)

© SPIE. Terms of Use
Back to Top