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Based on the assumption of a pulse laser beam with an initial Gaussian temporal shape of the pulse and a Laguerre-Gaussian fundamental-model spatial distribution, the Rytov approximation and modified von Karman spectrum model of the index-of-refraction fluctuation of atmosphere, the effect of turbulence on the detection probability of single-photon propagation in atmospheric communication channel...
This paper presents an approach to integrate structural and control parameters optimization for an active vibration isolation system based on the elitist strategy genetic algorithm. This method, which takes the total weighted root mean square of the acceleration of isolation platform, the dynamic deflection of isolation system and the dynamic displacement of the base as optimization performance indicators,...
This paper presents an approach to research the active vibration isolation system under LQG control strategy through the method of co-simulation using ADAMS and MATLAB. Create System's dynamics simulation prototype in ADAMS, and return the acceleration of vibration isolation platform, the system dynamic deflection and the base's dynamic displacement as performance parameters, then establish the LQG...
With the adoption of Rytov approximation and modified von Karman spectrum model of index-of-refraction fluctuation, we sturdy the effects of the tilt-corrected residual atmospheric aberration on OAM of potons. The results shown that tilt-corrected residual aberration also damage the initial OAM and induce new OAM. With the increasing of z, the number of the initial OAM photons will go down while the...
The well defined orbital angular momentum states of photons offer a practical realization of quantum digits and a means of secure single-photon optical communication. The orbital angular momentum is associated with the spatial distribution of the wave function and the number of orbital angular momentum eigenstates is unlimited, giving the possibility of arbitrary base-N digits. The free-space optical...
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