|
Basics of Lasers
Lasers are simply just one colour of light (or wavelength), specially selected by way of devices often recognized as Laser chambers and filters. Thus we can wonder, why we ought to pick out specific light. This can be due to the fact lasers must be specific. For example, if we want to act upon hair for hair removal, we target a structure referred to as melanocyte, and much more specifically, melanin, which is the pigment within the melanocyte. This pigment responds to light at the wavelength of around 725 nm; hence if we can get a light at this wavelength, we would have the ability to selectively destroy melanin as well as the melanocyte, which can be present inside hair root, and therefore destroy the hair permanently. Because the skin along with the other structures like blood cells are a several colour, they do not respond at this wavelength, plus a laser at this wavelength, causes no harm to these structures, accounting for their specificity and their safety.
|
