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Topological charge of a Gaussian beam with an off-axis optical vortex
- Panov, Vitaly P.;
- Lee, Doyeon;
- Kotlyar, V. V.;
- Kovalev, A. A.;
- Priyadharshana, P. A. N. S.;
- ... Song, Jang-Kun;
- 외 2명
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1초록
We show that when an optical vortex with a topological charge n shifts from the optical axis of a Gaussian beam, the orbital angular momentum decreases, whereas the topological charge remains unchanged. We experimentally confirmed this phenomenon with the aid of a q-plate array generated in a liquid crystal cell filled with a frustrated chiral nematic. We also theoretically proved that the topological charge of an optical vortex is conserved when the optical vortex is displaced from the axis.
키워드
Off-axis optical vortex; Frustrated chiral nematic; Liquid crystal; ORBITAL ANGULAR-MOMENTUM; LIGHT; TRANSMISSION; TWEEZERS; STATES
- 제목
- Topological charge of a Gaussian beam with an off-axis optical vortex
- 저자
- Panov, Vitaly P.; Lee, Doyeon; Kotlyar, V. V.; Kovalev, A. A.; Priyadharshana, P. A. N. S.; Kwak, Keumcheol; Migara, L. K.; Song, Jang-Kun
- 발행일
- 2025-01
- 유형
- Article
- 권
- 574