Tophat beam

A tophat beam, often referred to in the context of optics and laser technology, is a type of light beam with a characteristic intensity profile that is uniform across a certain area and drops off sharply outside that area, resembling the shape of a "top hat." ### Key Features of a Tophat Beam: 1. **Uniform Intensity**: The beam has a consistent intensity across its central region, which is beneficial for applications requiring even illumination.