The green laser beam thus behaves like an object, blocking the blue light and casting a dark line across the screen. That dark line meets all the criteria for a shadow: it was visible by eye ...

The interaction between the two light sources created a shadow on a screen that ... because the green laser increases the ...

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 ...