29 September 2004 Far-field Gaussian beam shaping under the diffraction limits
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In this paper, recurring to the main idea of G-S algorithm, an inverse transmission optimization algorithm is proposed to establish the phase structure of the compensation phase plate, which can realize the shaping of Gaussian beam in far diffraction field. This method not only overcomes the disadvantage of G-S algorithm in convergence which is applied to shape Gaussian beam under the diffraction limits, but the obtained phase plate is more convenient for the practical fabrication. According to the inverse transmission optimization algorithm, we transform successfully Gaussian laser beam into the flat-top, the doughnut-like beam and the two-rings beam within the diffractive limits region. The corresponding numerical results are provided.
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Shuyun Teng, Shuyun Teng, Liren Liu, Liren Liu, Zhu Luan, Zhu Luan, } "Far-field Gaussian beam shaping under the diffraction limits", Proc. SPIE 5525, Laser Beam Shaping V, (29 September 2004); doi: 10.1117/12.557899; https://doi.org/10.1117/12.557899

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