Sharply focusing a radially polarized laser beam using a gradient Mikaelian’s microlens期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Sharply focusing a radially polarized laser beam using a gradient Mikaelian’s microlens

Authors:	V.V. Kotlyar

Affiliation:	Image Processing Systems Institute of the Russian Academy of Sciences, S.P. Korolyev Samara State Aerospace University, Molodogvardeiskaya, 151, Samara 443001, Russia

Abstract:	Focusing a radially polarized annular Gaussian beam with a gradient Mikaelian’s microlens is simulated using a radial version of the FDTD method (finite-difference time domain), in which Maxwell’s equations in the cylindrical coordinates are solved in the MATLAB 7.0 environment. We show that the focal spot size (the area with larger-than half-maximum intensity) can be made as small as 0.126λ², with focal spot diameter being 0.40λ.

Keywords:	Radial FDTD method Sharp focusing of light Gradient Mikaelian&rsquo s microlens Minimal focal spot size
本文献已被 ScienceDirect 等数据库收录！