Double-slit interference of radially polarized vortex beams

Junli Qi; Weihua Wang; Xiujian Li; Xiaofeng Wang; Wenchao Sun; Jiali Liao; Yongming Nie

doi:10.1117/1.OE.53.4.044107

11 April 2014 Double-slit interference of radially polarized vortex beams

Junli Qi, Weihua Wang, Xiujian Li, Xiaofeng Wang, Wenchao Sun, Jiali Liao, Yongming Nie

Author Affiliations +

Optical Engineering, Vol. 53, Issue 4, 044107 (April 2014). https://doi.org/10.1117/1.OE.53.4.044107

Abstract

Both radially polarized (RP) and radially polarized vortex (RPV) beams are generated by an experimental setup with one phase-only liquid crystal spatial light modulator which efficiently modulates the phase retardation distributions of input beam by twice reflections. The polarizing properties and double-slit interference of both RP and RPV beams are investigated in detail. Misplacement and tilt appear in double-slit interference fringes of both RP beams and RPV beams in simulations and experiments. The fringe tilt number F in the intermediate region is proportional to the topological charge l of RPV beams with the approximate relation F_s(l)=0.8125l in simulations and F_e(l)=0.8182l in experiments. The double-slit interference method can be utilized to determine and analyze the topological charge of the beams.

Citation Download Citation

Junli Qi, Weihua Wang, Xiujian Li, Xiaofeng Wang, Wenchao Sun, Jiali Liao, and Yongming Nie "Double-slit interference of radially polarized vortex beams," Optical Engineering 53(4), 044107 (11 April 2014). https://doi.org/10.1117/1.OE.53.4.044107

Published: 11 April 2014

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