Phys.org January 24, 2022 The propagation of laser through turbulent atmosphere is affected by wind and minor equipment vibrations. Researchers in Australia used a host of features to keep the beam stable, including temperature controls, noise reduction and automatic adjustments to the devices holding the equipment. The test involved sending a beam from a building to a site 1.2 kilometers away. The target consisted of a mirror to bounce the laser beam back to a device near the source of the laser. The beam was held in place for approximately five minutes. Once a long-distance means of sending laser signals […]
Tag Archives: Laser propagation
Optimal information about the invisible
Phys.org January 25, 2021 If the laser beam is deflected, scattered, and refracted, often it impossible to obtain useful data from the measurement. According to an international team of researchers (the Netherlands, Austria) if you know exactly what the disturbing environment is doing to the light beam, you can reverse the situation: Then it is possible to create a complicated wave pattern instead of the simple, straight laser beam, which gets transformed into exactly the desired shape due to the disturbances and hits right where it can deliver the best result. It is enough to first send a set of […]