Laser Proximity Sensors use laser beams to detect the presence or absence of objects within a certain range. They are used in security systems, robotics, automation, and industrial processes, where ...
Spin doctor: Markus Lindemann created the spin laser as part of his PhD work. (Courtesy: RUB/Kramer) A laser with a polarization that can be made to oscillate at over 200 GHz has been created by ...