Scattering analysis of a Laguerre Gaussian beam for target detection

Author:

Fang Liang12,Luo Lan1ORCID,Zhao Rujin12,Liu Bo12ORCID

Affiliation:

1. Chinese Academy of Sciences

2. University of Chinese Academy of Sciences

Abstract

The propagation and scattering characteristics of a Laguerre Gaussian (LG) beam and Gaussian beam are theoretically and experimentally comparatively studied. The phase of the LG beam is almost free of scattering when the scattering is weak, resulting in a much weaker loss of transmission compared with the Gaussian beam. However, when scattering is strong, the phase of the LG beam is completely disturbed by it, and the transmission loss of the LG beam is stronger than that of the Gaussian beam. Moreover, the phase of the LG beam becomes stabler as the topological charge increases, and the beam radius increases as well. Therefore, the LG beam is suitable for short-range target detection in a weak scattering medium, not for long-range in a strong scattering medium. This work will contribute to the development of target detection, optical communication, and other applications of orbital angular momentum beams.

Funder

Laboratory Innovation Foundation of the Chinese Academy of Science

Sichuan Outstanding Youth Science and Technology Talent Project

CAS “Light of West China” Program and Special Support for Talent from the Organization Department of Sichuan Provincial Party Committee

Publisher

Optica Publishing Group

Subject

Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering

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