25 September 2014 Optimal diffraction-limited focusing through static aberrations
Author Affiliations +
Optimization of the point spread function by means of sensor-less adaptive optics, based on direct imaging of the focal spot, suffers from errors due to enormous dynamic range of the focal intensity. Also, optimization algorithms based on the focal spot metrics only, are insensitive to other system parameters and can converge towrong" solutions. To improve the beam quality and the robustness of the global extremum, we have introduced dynamic feedback control of the camera sensitivity. To further increase the robustness of optimization, we introduced a regularization parameter in the form of some function of the system state, achieving its minimum together with the desired solution. Significant gain in achievable beam quality is shown in comparison with the implementation lacking those improvements. Proposed techniques are implemented in Beam Tuner software forne-tuning of laser and imaging systems with adaptive optics.
© (2014) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Vsevolod Patlan, Vsevolod Patlan, Oleg Soloviev, Oleg Soloviev, Gleb V. Vdovin, Gleb V. Vdovin, "Optimal diffraction-limited focusing through static aberrations", Proc. SPIE 9194, Laser Beam Shaping XV, 91940E (25 September 2014); doi: 10.1117/12.2063373; https://doi.org/10.1117/12.2063373


Reconstructor and control system tests for the new 6.5 m...
Proceedings of SPIE (October 16 1997)
Commercialization of adaptive optics
Proceedings of SPIE (November 05 2002)
The GRAVITY acquisition and guiding system
Proceedings of SPIE (July 21 2010)
Status of the W.M. Keck Adaptive Optics Facility
Proceedings of SPIE (September 10 1998)
KAOS adaptive optics system for the Vacuum Tower Telescope...
Proceedings of SPIE (February 10 2003)

Back to Top