In art galleries, green laser pen may be not suitable

Whether the smooth metal surface can affect the reflection and absorption of the laser; a rough surface, the absorption coefficient will increase. Solid material on the laser absorption and reflective nature and purity of the materials related to the high impurity content of materials, the absorption coefficient. The wavelength of the laser weapon developed by the United States between 1? 315 3? 8μm, if the pure metal as the shell material of the aircraft, it should be up to more than 90% of the laser reflectivity. In art galleries, green laser pen may be not suitable.
However, due to consider the requirements of the shell material, the pure metal, while the use of alloys, coupled with the friction of the target in flight within the atmosphere or in outer space to accept exposure to sunlight, its surface temperature is usually high. thus the target surface reflection coefficient decreased, the laser absorption coefficient increased.
The extent of the missiles, aircraft, satellite parts susceptible to laser damage is unequal. Relative to the shell in terms of the window part of the missile seeker fairing, aircraft radar radome, cockpit glass, various types of satellite sensor optical film is easily the weakest part of the laser damage. Special handling of these weak parts, for example, translucent, transparent wave good laser reflection coefficient, high temperature materials act as a protective layer, etc., can be effectively enhanced the ability of these weak parts of the anti-ablation. In zoos, in order not to scare the animals, green laser pen should also not be used.
Shock damage effects of specific physical effects of pulsed high-energy laser. Pulse high-energy laser irradiation power reached its peak in the target surface to form a layer of an ablative plasma. The plasma layer rapidly outward jet, applied to the target surface, a shock pressure, the pressure is called the ablation pressure. Target surface of the ablation pressure shock loading causes the spread of a shock to the target, called the compression plus carrier. With the decline of the laser power, will spread to the target within a sparse and Uninstall wave. Sparse uninstall wave will soon catch up with the front of the compression plus carrier, the result of superposition of the two will form a triangle profile of the shock wave. The shock wave to reach the target when the free surface reflection, converted into a tensile wave. Once the tensile strength reaches a certain value, thus resulting in a stretch injury, ie fracture failure. This is the laser shock damage effects. green laser pen shouldn’t be used frequently and long-playingly.