Patent ID: 6506289
Filing Date: 2003-01-14
Classification: C23C,G02B,Y10T

Abstract:
A method of making a material layer used in forming planar optical devices, the method comprising:positioning a substrate opposite a planar target, the target having an area larger than the area of the substrate; and applying radio frequency power at a first frequency to the target in the presence of a gas, under a condition wherein a central portion of the target overlying the substrate is exposed to a uniform plasma condition, whereby a material layer is formed on the substrate, wherein the uniform plasma condition is created by applying a time-averaged uniform magnetic field, wherein the uniform magnetic field is applied by moving a magnet positioned proximate to the target across the target in a plane parallel to the plane of the target; and wherein moving a magnet across the target is moving a magnet in a first direction, the magnet extending beyond the target, in a second direction perpendicular to the first direction.