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4 March 2016 Diffraction patterns from multiple tilted laser apertures: numerical analysis
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We propose a Rayleigh-Sommerfeld based method for numerical calculation of multiple tilted apertures near and far field diffraction patterns. Method is based on iterative procedure of fast Fourier transform based circular convolution of the initial field complex amplitudes distribution and impulse response function modified in order to account aperture and observation planes mutual tilt. The method is computationally efficient and has good accordance with the results of experimental diffraction patterns and can be applied for analysis of spatial noises occurring in master oscillator power amplifier laser systems. The example of diffraction simulation for a Phobos-Ground laser rangefinder amplifier is demonstrated.
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Anton V. Kovalev and Vadim M. Polyakov "Diffraction patterns from multiple tilted laser apertures: numerical analysis", Proc. SPIE 9742, Physics and Simulation of Optoelectronic Devices XXIV, 97420P (4 March 2016);

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