Targeting applications such as precision equipment setup, the L202 dual-beam alignment laser two-plane position-sensing system can make flatness and straightness measurements accurate to ±0.001 in.

Every laser cutter enthusiast eventually pops the question: how on earth do I align an invisible beam that’s more-than-happy to zap my eyeballs, not to mention torch everything else in its path? We ...

The PBG group of Department of physics, Fudan university, recently proposed a method using a reflective photonic crystal slab to generate vortex with high conversion efficiency and without an ...