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Rotation of laser beams with zero of the orbital angular momentum

2007; Elsevier BV; Volume: 274; Issue: 1 Linguagem: Inglês

10.1016/j.optcom.2007.01.059

1873-0310

Victor V. Kotlyar, Svetlana N. Khonina, Р. В. Скиданов, В. А. Сойфер,

Advanced Fiber Laser Technologies

We show that among the multitude of rotating light beams whose complex amplitude can be represented as a linear superposition of the Laguerre–Gaussian (LG) modes with definite numbers there are light beams with zero orbital angular momentum (OAM) and vice versa, multi-mode LG beams that show no rotation and are lacking the radially symmetric intensity distribution can possess the non-zero OAM. Also, we give examples of the rotating light beams with zero OAM, represented as a superposition of the Bessel and new hypergeometric modes. Using an SLM, we generate a rotating Bessel beam with zero OAM for the first time.