Twin optical vortices from Laguerre-Gaussian beam and methyl red doped nematic liquid crystal interaction

Authors

  • Christine O. Manaois National Institute of Physics, University of the Philippines Diliman
  • Nathaniel P. Hermosa II National Institute of Physics, University of the Philippines Diliman

Abstract

Bound pair optical vortices (twin vortices) of opposing topological charge were seen when Laguerre-Gaussian (LG) beams of (0,2) and (0,3) modes were made to interact with a homeotropically aligned methyl red doped nematic liquid crystals (MR:NLC). Interferograms with forked-like discontinuities demonstrate the presence of these vortices. These vortices appear after a certain intensity onset. After the onset intensity, the vortices increased its topological charge with increasing LG beam intensity. A maximum phase differences of 4π and 6π were observed for incident LG (0,2) and LG (0,3) modes, respectively. These phase differences correspond to very large index change in the MR:NLC of 0.021 and 0.031.

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Issue

Article ID

SPP-2004-PA-19

Section

Poster Session PA

Published

2004-10-25

How to Cite

[1]
CO Manaois and NP Hermosa, Twin optical vortices from Laguerre-Gaussian beam and methyl red doped nematic liquid crystal interaction, Proceedings of the Samahang Pisika ng Pilipinas 22, SPP-2004-PA-19 (2004). URL: https://proceedings.spp-online.org/article/view/SPP-2004-PA-19.