Today, i tried to coat my laser devices with a thin layer of anti-reflection coating made of silicon dioxide..well the machine to do the job is called Nordiko 2000, physical vapour deposition. it is a big machine with pumps to create both low pressure and high vacuum needed for deposition of the material. when RF power is increased you can see a glow of plasma...WOOOOOOOOOOW. Plasma is a "fourth state of matter", where you have gas atoms stripped of their electrons. (this is what make your Plasma TV to work)...anyway after creating a plasma composed of mixture of Argon and Oxygen, that will evaporate your target material in my case silicon dioxide. then when the sample chamber is placed on top of this plasma, a thin layer of silicon dioxide is deposited at the rate of 3nm (nano metre) per minutes...which means an hour for me to wait for my calculated thickness to be achieved..oh there is a computer screen which is like a dino for its age..the menu is user friendly if you have Einstein memory..you need to make sure RF power is applied gradually and reflection is kept minimum and your efficient values are higher.
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