| 摘要 |
The invention specifies a new method for producing optical surfaces coated according to the principle of the refractive index that increases with the material depth, e.g. of light-transmitted elements such as optical elements for high-power lasers with the use of an etching process. The essential novelty of the method consists in that the surface to be coated is bombarded at right angles in a suitable apparatus with ions which generate latent nuclear tracks on the material. In this case, the mean separation of ions from one another is approximately 0.01 to 0.1 mu m, the penetration depth is approximately 1 x lambda to 5 x lambda ( lambda = wavelength of the light employed). After irradiation, the bombarded surface is etched to the extent that the largest opening of the etching cone of an individual nuclear track does not exceed 0.1 mu m. The particular advantage of the novel method consists in that it is now also possible to coat 1-component lenses in a simple way.
|
