Simplex optimization-based dynamic wavefront control for mitigation of atmospheric distortions of the laser beam

Vladimir V. Nikulin

doi:10.1117/12.506424

27 January 2004 Simplex optimization-based dynamic wavefront control for mitigation of atmospheric distortions of the laser beam

Vladimir V. Nikulin

Author Affiliations +

Proceedings Volume 5160, Free-Space Laser Communication and Active Laser Illumination III; (2004) https://doi.org/10.1117/12.506424
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

Development of long-range laser communication devices capable of operating within Earth’s atmosphere is a challenging task. Turbulence effects cause changes of the refractive index along the propagation path that lead to phase distortions (aberrations), thus creating random optical energy redistribution in the spatial domain and imposing performance limitations on the laser systems. A common method of mitigating these effects suggests dynamic wavefront control. In this paper the proposed technique is based on correction of the distorted beam using an electrically addressed programmable spatial light modulator (SLM). The phase profile that we impose on the distorted laser beam is described by a general two-dimensional wavefront OPD function. The simplex algorithm facilitates dynamic optimization of the system performance metric J as a function of control parameters (the polynomial coefficients). The resultant polynomial is used for calculation of the corrective phase profiles to be loaded onto the programmable phase modulator. The proposed control algorithm is independent of the system model and offers the advantage of blind (“model-free”) optimization. The wavefront correction system is implemented in a simulation setup. Its performance is assessed in terms of convergence, speed, robustness and the ability to reduce the effects of wavefront distortions.

Citation Download Citation

Vladimir V. Nikulin "Simplex optimization-based dynamic wavefront control for mitigation of atmospheric distortions of the laser beam", Proc. SPIE 5160, Free-Space Laser Communication and Active Laser Illumination III, (27 January 2004); https://doi.org/10.1117/12.506424

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available