| Generation and application of the twisted beam with orbital angular momentum |
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| 作者姓名： | 高明伟 高春清 林志锋 |
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| 作者单位： | Department of Opto-Electronics Engineering Beijing Institute of Technology，Beijing 100081，Department of Opto-Electronics Engineering Beijing Institute of Technology，Beijing 100081，Department of Opto-Electronics Engineering Beijing Institute of Technology，Beijing 100081 |
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| 基金项目： | This work was partly supported by the National Natural Science Foundation of China (No. 69908001)，the Characterization of Optical Company and Laser BeamsⅡof Germany and the internatioual cooperation agreed by DFG and NSFC. |
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| 摘 要： | The twisted Laguerre-Gaussian beam was generated by transforming of Hermite-Gaussian beams through an optical system consisting of three rotated cylindrical lenses. The intensity distribution and phase structure of the twisted hollow beam were theoretically analyzed by using Collins diffraction integral. By utilizing the method of mode decomposition, the theory of transformation was analyzed. In the experiment, micro particles were trapped and rotated by this twisted beam.
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