The answer for [Owen Schafer] was to build it with parts he had lying around and a few strategic purchases. While he was initially planning on using a diode laser, doing anything more than ...

[Styropyro’s] handheld, DIY laser rifle, or Laser Telescope Blaster as he calls it, works for long distances. His solution lies in some surprising physics: the larger the diameter of the beam ...

Knowledge of a laser beam's shape and output-power distribution is critical for optimizing laser performance. Neil Savage summarizes the latest beam-profiling products on the market. People using ...