Simplified sensitivity analysis of coherent beam combining in a tiled aperture architecture
Jan K. Jabczyński, Przemysław Gontar, Łukasz Gorajek, Waldemar Żendzian
Abstract
We propose a simple analytical-numerical model for simplified sensitivity analysis of coherent beam combining of several dozens of emitters arranged in 2D tiled architecture. The main findings are as follows: (i) regarding phase/piston error, the performance does not depend on the number of emitters and particular amplitude profiles and fulfills the Maréchal formula; (ii) regarding tilt mismatch, the performance does not depend on the number of emitters; however, the effect of amplitude profile has to be taken into account; and (iii), regarding wavefront aberration, the Strehl ratio drop is dominant and fulfills the Maréchal formula as well.
Topics & Concepts
Strehl ratioOpticsTilt (camera)WavefrontPiston (optics)PhysicsZernike polynomialsSensitivity (control systems)Aperture (computer memory)AmplitudeNumerical apertureBeam (structure)Computer scienceMathematicsElectronic engineeringGeometryWavelengthAcousticsEngineeringPhotonic Crystal and Fiber OpticsAdaptive optics and wavefront sensingOrbital Angular Momentum in Optics