Related Experiment Video
Updated: Apr 24, 2026

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Partially coherent, radially polarized beam with annular apodization
C Mariyal1, P Suresh1, K B Rajesh2
1Department of ECE, National College of Engineering, Tirunelveli, Tamilnadu 627007, India.
Abstract:
Based on the vectorial Debye theory, the tight focusing properties of partially coherent, radially polarized vortex beams are investigated in detail. In this paper, we propose to use an amplitude modulated filter in combination with a high NA lens to generate long focal depth in the focal region. Numerical results show that the generation of long focal depth of FWHM (22.08λ) is achieved, which finds useful application in microscopy techniques such as particle acceleration, laser processing, optical micromanipulation, and beam shaping.
Related Concept Videos
Group Polarization
Potential Due to a Polarized Object
Centroid for the Paraboloid of Revolution
The centroid for the paraboloid of revolution is the point where all the mass of the paraboloid is concentrated. This centroid is important for engineering applications, as it determines how forces are...
Deformation in a Circular Shaft
Eccentric Axial Loading in a Plane of Symmetry
Design of Prismatic Beams for Bending

