The research of propagation characteristic and formation of double half-Gaussian hollow beams |
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Authors: | Yuan Dong XiHe Zhang GuoBin Ning GuangYong Jin Wei Liang YanFei Lü and Kai Zhang |
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Institution: | (1) School of Science Changchun University of Science and Technology, Changchun, 130022, China |
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Abstract: | A new kind of hollow beams, double half-Gaussian hollow beams, was put forward. With the help of the Collins formula, the
analytical equation of propagation and transformation of the hollow laser beams in free space was deduced. The simulation
shows that the intensity exhibits the three-dimensional trap distribution in the near-field, while the double half-Gaussian
hollow beams turn into solid laser beams when propagating a certain distance, which shows the characteristics of self-focus.
The double half-Gaussian hollow beams were obtained by means of the dual-reflecting splitting optical system. The intensity
of the vertical loop in different distances was tested, which shows that the analytical equation of propagation and transformation
is in agreement with the result.
Supported by the National Natural Science Foundation of China (Grant No. KB92009) |
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Keywords: | double half-Gaussian hollow beams three dimensioned trap self-focus dual-reflecting splitting |
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