chemically degreasing the surface of a parent substrate which is substantially optically transparent to {HEAD ~ light} in {TAIL ~ the visible region} of 350 to approximately 750 nanometers and which comprises a material selected from the group consisting of an amorphous material, a single crystal, polycrystalline materials, glass, salt materials, ceramic materials and mixtures thereof to remove hydrocarbon contamination 
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chemically degreasing the surface of a parent substrate which is substantially optically transparent to { HEAD ~ light } in { TAIL ~ the visible region } of 350 to approximately 750 nanometers and which comprises a material selected from the group consisting of an amorphous material , a single crystal , polycrystalline materials , glass , salt materials , ceramic materials and mixtures thereof to remove hydrocarbon contamination
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