Abstract

Since the development of the generalized Lorenz–Mie theory, electromagnetic scattering by arbitrary beams has drawn growing interest. The Laguerre–Gaussian (LG) vortex beam is well known for its orbital angular momentum. With the aim of investigating the analytical solution to the scattering of a chiral sphere by a LG vortex beam, particular attention is paid to the expansion expression of the LG vortex beam. The expansion coefficients are derived based on the expansion of a Hermite Guassian beam as the LG vortex beam can be expressed as the superposition of Hermite Guassian modes. The numerical results of the incident beam expansion coefficients convergence and the scattered field comparison with the reference prove the validity of the theoretical analysis and computation codes. The results reveal that there exists an optimal sphere size for the maximum scattered field which is determined by the topological charge, beam waist radius, and beam center position. The investigation could provide a foundation for the optical manipulation of chiral particles by a LG vortex beam.

© 2016 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Calculation of electromagnetic scattering by a large chiral sphere

Zhen-Sen Wu, Qing-Chao Shang, and Zheng-Jun Li
Appl. Opt. 51(27) 6661-6668 (2012)

Scattering of on-axis Gaussian beam by a chiral spheroid

Bing Yan, Huayong Zhang, and Chenhua Liu
J. Opt. Soc. Am. A 29(11) 2381-2385 (2012)

Analysis of rainbow scattering by a chiral sphere

Qing-Chao Shang, Zhen-Sen Wu, Tan Qu, Zheng-Jun Li, Lu Bai, and Lei Gong
Opt. Express 21(19) 21879-21888 (2013)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Figures (9)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Equations (23)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Metrics

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription