An art installation featuring 30 laser beams in primary colors will shine from the top of the Space Needle Friday night.

During a treatment session, your cosmetic specialist will point a low-energy laser beam through your skin, which will locate your hair by its color. The beam then travels down the hair shaft and ...

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 ...