光子嫩肤用滤光片的-物理电子学专业论文.docxVIP

II II Abstract Intense Pulsed Light photorejuvenation is the newest hairdressing technology after laser hairdressing technology. The principle of the technology is the intense pulsed Xe light emits wide spectral range, special filter are used to filtering UV-light and select standard wave range for treatment, the light have the effect on human’s skin organization and have hairdressing impact. The difficulty of the related filter’s design and deposition lie in the high requirement about high transmittance of pass band, broad rejection zone and high steepness. There are several aspects discussed in this article. Two methods are adapted to design filters in the article: stack formula design and automatic optimizing design. We use long-pass symmetrical period as main film system when using regular layers design method. Besides the Herpin index method, a new non-symmetrical period matching layers approach is also been put forward. Comparing the two methods, the latter is superior to the former in several aspects. So non-symmetrical period matching layers approach is proved to be a good film design method and can also be used to other symmetrical film design. The traditional local optimizing method, Needle method and Tunneling method are mixed used in automatic optimizing design. We consider thickness tolerance and thickness restriction as parameters in the design, structure new merit function; analyze the influence of initial film thickness and the initial film material to optimizing results, find the most suitable initial parameters. Comparing the thickness sensitivity of different filter, the best theoretical result can be got. So it has actual instructional meaning when actually depositing multi-layer coating. Deposing factors include substrate temperature, evaporation rate, beam density and screen pole voltage are analyzed by using the orthogonal intersection experiment method, finding their influences for quality of coating surface, adhesion and spectrum characteri