Because the laser pointer has good directivity and concentrated energy, it can be used in many aspects of life, such as positioning, indication, signal transmission, etc. However, due to its power, a closer irradiated object absorbs the energy emitted by the laser at the point of irradiation, converting it into heat energy, thereby increasing the temperature of the object. When the temperature is above the melting point or ignition point, it will melt or catch fire. More than 1 kilowatt, up to 50 kilowatts, it is a well-established laser weapon and an excellent green laser pointer cutting tool. It can damage planes, vehicles, artillery shells, and, to a moderate extent, ignite buildings, or it can cut an inch of steel in front of a laser.
Laser treatment effect of infrared laser:
When there is no pain during the treatment, the application of light in the treatment is called "phototherapy". The basic principles of hyperthermia focus on raising body temperature, dilating blood vessels, and increasing the body's metabolic rate. Infrared lasers are effective treatments to promote healing and increase flexibility in ligaments, joint capsules, and muscles.
Physiological basis and function of infrared laser:
The changes brought about by the infrared thermal effect mainly include the increase of skin surface temperature, the improvement of subcutaneous blood circulation, the relaxation of muscle tension, the relief of pain and the regulation of normalization of autonomic nerves. But we must always keep in mind that powerful infrared light can cause burns, blisters and other tissue damage when the skin temperature is above 45°C.
Over 50kW is a serious laser weapon called a HEL (High Energy Energy) that can burn missiles, planes or anything you can think of at great distances. Ownership of such high power laser pointer is generally limited to government agencies and their contractors.
