期刊
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
卷 38, 期 3, 页码 825-833出版社
OPTICAL SOC AMER
DOI: 10.1364/JOSAB.412907
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- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico [307898/2018-0, 426990/2018-8]
A recent study focused on the longitudinal optical forces exerted by circularly symmetric Bessel beams on point-like particles in the Rayleigh regime of the generalized Lorenz-Mie theory, revealing the existence of non-standard axicon forces. The comparison between optical forces in the GLMT and dipole theory frameworks showed extremely accurate agreement, leading to the conjecture that the Rayleigh limit of GLMT might exactly identify with the usual dipole theory of forces.
A recent work devoted to the longitudinal optical forces exerted by circularly symmetric Bessel beams on point-like particles in the Rayleigh regime of the generalized Lorenz-Mie theory (GLMT) confirmed the existence of non-standard forces (named axicon forces in the context of Bessel beams) that seemingly cannot be expressed in terms of scattering and gradient forces traditionally discussed in the framework of the dipole theory of forces. These results lead to this question: Do the Rayleigh limit of the GLMT and the dipole theory of forces actually agree, or are they in disagreement? If so, the Rayleigh limit of the generalized Lorenz-Mie theory would have to be preferred because it provides a highly accurate formulation. To find a definitive answer to the question, numerical comparisons done between optical forces exerted in both frameworks demonstrated an extremely accurate agreement up to 1000 decimal places. This leads to the conjecture that the Rayleigh limit of GLMT might indeed exactly identify with the usual dipole theory of forces. (C) 2021 Optical Society of America
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