Monthly Archives: July 2021
Focusing Beam Intensity with Top Hat Beam Shapers
A top hat output beam has a uniform, focused intensity distribution with a well-defined shape and size, as well as sharp edges. This article explains how to obtain such an illumination profile with a laser beam. Introduction to top hat output A top hat output from an optical system including a laser beam describes the … Continue reading
Killing Cancer Cells Using Gold Nanoparticles
Researchers at the University of Liverpool published a paper entitled, “Photodynamic and Photothermal Human Cancer Cell Killing Using Gold Nanoparticles.” The experimental setup for this work included an opus 532 laser from Laser Quantum. This laser is a diode-pumped, solid-state, continuous wave laser at 532 nm with a 1/e2 beam diameter of 1.85 mm. For … Continue reading