Orbital Angular Momentum Beam
Application ID: 72511
This model simulates Gaussian to Laguerre Gaussian beam shaping with the Beam Envelopes interface, the unidirectional wave formulation. The input beam is a focusing Gaussian beam with a topological spiral phase.
It is known that this phase mask converts a Gaussian beam to a donut beam. The phase rotates around the optical axis as the beam propagates. So the resulted beam is called the vortex beam, typically represented by the Laguerre-Gaussian beam.
This beam shaping can be done also by a spiral diffractive optic or a forked grating.
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Specification Chart and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.