SHI Yaoyao, WU Tong, LIU Youwen, LI Yan, ZHOU Rong. Control of Selfbending Airy Beams[J]. Acta Photonica Sinica, 2013, 42(12): 1401
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Freespace selfbending of nondiffracting Airy beams was theoretically investigated with Schrodinger's equation, the factors influencing selfbending were analyzed, which were linked to actual physical quantities, and the method of acceleration control of Airy beams with gradientindex material was given. The selfbending property appearing during propagation of one and twodimensional Airy beams was numerical simulated. Moreover, the numerical simulation results that the deflection of Airy beams can be compensated and reversed with proper control. The relationship between the propagation length of compensated finite Airy beam in a gradientindex material and the decay factor was discussed. The results show that the compensated finite Airy beam can keep nondiffracting propagation when intensity of the central lobe decays from maximum to eighteen percent of the maximal value. The relationship between the propagation length of compensated finite Airy beam in a gradientindex material and the central lobe width as well as the wavelength was also studied, respectively. In practical application, three appropriate parameter values and a right gradient refractive index material can be selected through the dependent relationship between the decay factor, the central lobe width as well as wavelength and the propagation length of compensated finite Airy beam at the instance of the propagation length of compensated finite Airy beam, and optimal control of Airy beam can be realized.