Related Experiment Video
Updated: May 14, 2025

The Generation of Higher-order Laguerre-Gauss Optical Beams for High-precision Interferometry
Published on: August 12, 2013
Generating vortex beams by transforming near-field coordinates of coherent beam combining system
Abstract:
In this study, we introduce a method of generating vortex beams based on coherent beam combining (CBC) configuration. By utilizing a pair of static optical elements with specific phase distributions, the near-field of array beams is transformed from Cartesian to polar coordinate. After the converted light field is focused, the focal point is associated with the wavefront. With the aid of CBC configuration and active phase control, it is easy to switch orbital angular momentum (OAM) modes by controlling the position of focal point. Hence, the OAM modes can be measured and generated simultaneously. The performance of the method has been numerically explored, and different OAM modes including integer and fraction topological charge have been generated efficiently.
Related Concept Videos
Beams with Symmetric Loadings
The M/EI...
Generating Electromagnetic Radiations
Beams with Unsymmetric Loadings
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
Deflection of a Beam
Singularity functions, described in an earlier lesson, are powerful mathematical tools that represent discontinuities within a function commonly encountered in structural loading...
Prismatic Beams: Problem Solving
The design begins with analyzing the beam as a free body to identify moments and force balances, thereby determining support reactions. Next, the...
Shear on the Horizontal Face of a Beam Element

