Generation of tunable radially polarized array beams by controllable coherence

Jing Wang; Jipeng Zhang; Shijun Zhu; Zhenhua Li

doi:10.1117/12.2268284

12 May 2017 Generation of tunable radially polarized array beams by controllable coherence

Jing Wang, Jipeng Zhang, Shijun Zhu, Zhenhua Li

Proceedings Volume 10173, Fourth International Symposium on Laser Interaction with Matter; 1017326 (2017) https://doi.org/10.1117/12.2268284
Event: 4th International Symposium on Laser Interaction with Matter, 2016, Chengdu, China

Abstract

In this paper, a new method for converting a single radial polarization beam into an arbitrary radially polarized array (RPA) beam such as a radial or rectangular symmetry array in the focal plane by modulating a periodic correlation structure is introduced. The realizability conditions for such source and the beam condition for radiation generated by such source are derived. It is illustrated that both the amplitude and the polarization are controllable by means of initial correlation structure and coherence parameter. Furthermore, by designing the source correlation structure, a tunable NUST-shaped RPA beam is demonstrated, which can find widespread applications in micro-nano engineering. Such a method for generation of arbitrary vector array beams is useful in beam shaping and optical tweezers.

Citation Download Citation

Jing Wang, Jipeng Zhang, Shijun Zhu, and Zhenhua Li "Generation of tunable radially polarized array beams by controllable coherence ", Proc. SPIE 10173, Fourth International Symposium on Laser Interaction with Matter, 1017326 (12 May 2017); https://doi.org/10.1117/12.2268284

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